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Problem 26101

Consider the following frequency table representing the scores on a test. \begin{tabular}{|c|c|} \hline \multicolumn{2}{|c|}{ Scores on a Test } \\ \hline Class & Frequency \\ \hline $30-46$ & 10 \\ \hline $47-63$ & 3 \\ \hline $64-80$ & 13 \\ \hline $81-97$ & 12 \\ \hline $98-114$ & 12 \\ \hline \end{tabular}
Step 5 of 5 : Determine the number of scores between 29.5 and 97.5.

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Problem 26102

A random sample of 49 measurements from one population had a sample mean of 14, with sample standard deviation 3. An independent random sample of 64 measurements from a second population had a sample mean of 16, with sample standard deviation 4. Test the claim that the population means are different. Use level of significance 0.01.
USE SALT
(a) What distribution does the sample test statistic follow? Explain.
The standard normal. We assume that both population distributions are approximately normal with unknown standard deviations. The Student's t. We assume that both population distributions are approximately normal with unknown standard deviations. The Student's t. We assume that both population distributions are approximately normal with known standard deviations. The standard normal. We assume that both population distributions are approximately normal with known standard deviations.
(b) State the hypotheses.
$H_0: \mu_1 = \mu_2$ ; $H_1: \mu_1 > \mu_2$ $H_0: \mu_1 = \mu_2$ ; $H_1: \mu_1 \neq \mu_2$ $H_0: \mu_1 \neq \mu_2$ ; $H_1: \mu_1 = \mu_2$ $H_0: \mu_1 = \mu_2$ ; $H_1: \mu_1 < \mu_2$

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Problem 26103

One root of $f(x)=2 x^{3}+9 x^{2}+7 x-6$ is -3 . Explain how to find the factors of the polynomial. $\square$ RETRY

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Problem 26104

Click here to view the standard normal distribution table (page 1) Click here to view the standard normal distribution table (page 2). (a) What is the probability that a randomly selected time interval between eruptions is longer than 94 minutes?
The probability that a randomly selected time interval is longer than 94 minutes is approximately .3372 . (Round to four decimal places as needed.) (b) What is the probability that a random sample of 14 time intervals between eruptions has a mean longer than 94 minutes?
The probability that the mean of a random sample of 14 time intervals is more than 94 minutes is approximately $\square$ . (Round to four decimal places as needed.)

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Problem 26105

Question 5 Not yet answered Marked out of 1 Flag question
After 30 baseball games, A-Rod had 25 hits. If after 100 games, he had 80 hits, what is his average number of hits per game?
If you answer in decimal form, round to the nearest hundredth.
Answer: $\square$ ㅁ $\square$ $\square$ $\sqrt[9]{\square}$ $\square$ \binom{$ ㅁㅁㅣ }{0} \square\square$

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Problem 26106

Juan wants to earn at least $\$ 57$ trimming trees. He charges $\$ 7$ per hour and pays $\$ 6$ in equipment fees. What are the possible numbers of hours Juan could trim trees?
Use $t$ for the number of hours. Write your answer as an inequality solved for $t$ . $\square$

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Problem 26107

1. A copper wire has a resistivity of $1.68 \times 10^{-8} \Omega \cdot \mathrm{~m}$ at $20^{\circ} \mathrm{C}$ . The temperature coefficient of resistivity for copper is $\mathbf{0 . 0 0 3 9 3}$ per ${ }^{\circ} \mathrm{C}$ , calculate the resistivity of the wire at $50^{\circ} \mathrm{C}$ .

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Problem 26108

1. Calculate the average drift velocity of electrons when a current of 1.5 A is passing through a silver wire of $1.0 \mathrm{~mm}^{2}$ cross-sectional area

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Problem 26109

Solve. $25 x^{4}-15 x^{2}+2=0$

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Problem 26110

$\triangle X Y Z$ . The first is a translation of vertex $A$ to vertex $X$ What is the second transformation? a reflection across the line containing $\overline{A B}$ a reflection across the line containing $\overline{A C}$ a rotation about point $A$ a rotation about point B

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Problem 26111

Find the value of $f(7)$ . $y = f(x)$

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Problem 26112

Compare and order the numbers below from least to greatest. $4.6$ , $2.\overline{8}$ , $\pi$ , $\sqrt{17}$ , $\sqrt{7}$

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Problem 26113

Score on last try: 1 of 2 pts. See Details for more.
Next question Get a similar question You can retry this question below
Find the zeros and fully factor $f(x) = x^3 + 9x^2 + 25x + 21$ , including factors for and non-real zeros. Use radicals, not decimal approximations.
The zeros are | |

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Problem 26114

Back to Home Score: 10/15 Penalty: 1 off
Mis Identifying sequences practice ues December 19 at B.09 AM rades $67 \%$
Distingults) Arithmetic vo, Gemetrics Sequences
Answer Altempt 2 out of 2
This is $\square$ an arithmetic sequence and the common difference $\square$ is equal to $\square$ 5 . $19,14,9, \ldots$
Determine if the sequence below is arithmetic or geometric and determine the common difference / ratio in simplest form. (O) Watch Video Show Examples
Question $\square$ $\square$

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Problem 26115

10.3 Homework Question 2, 10.3.5 Part 4 of 6 HW Score: $25.6 \%, 5.38$ of 21 points Points: 0.38 of 1 Save
To test $H_{0}: \mu=100$ versus $H_{1}: \mu \neq 100$ , a simple random sample of size $n=19$ is obtained from a population that is known to be normally distributed. Answer parts (a)-(e). Click here to view the t-Distribution Area in Right Tail. $\mathrm{t}=2.432$ (Round to three decimal places as needed) (b) If the researcher decides to test this hypothesis at the $\alpha=0.01$ level of significance, determine the critical values.
The critical value(s) is/are $-2.878,2.878$ . (Use a comma to separate answers as needed. Round to three decimal places as needed.) (c) Draw a t-distribution that depicts the critical region(s). Which of the following graphs shows the critical region(s) in the t-distribution? A. B. c. (d) Will the researcher reject the null hypothesis? A. The researcher will reject the null hypothesis since the test statistic is not in the rejection region. B. The researcher will reject the null hypothesis since the test statistic is in the rejection region. C. There is not sufficient evidence for the researcher to reject the null hypothesis since the test statistic is not in the rejection region. D. There is not sufficient evidence for the researcheirto reject the null hypothesis since the test statistic is in the rejection region. Clear all Check answer

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Problem 26116

$\int_{0}^{\infty} \frac{e^{-\sqrt{x}}}{\sqrt{x}} dx =$

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Problem 26117

$\int_0^{\frac{\pi}{3}} \cos^{-1}(3x) dx$

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Problem 26118

7 A nutrition label states that there ore 36 g of carbohydrates in each serving. This accounts for $12 \%$ of the daily value. How many grams of carbohydrates are recommended per day?

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Problem 26119

38. Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost-estimating purposes, managers use two hours of labor time for planting a medium-sized tree. A random sample of 30 plantings during the past month was selected. Based on the sample, the mean number of planting time is 2.2 hours with a standard deviation of 0.516. With a 0.05 level of significance, use the PMACC process to test to see whether the population mean treeplanting time differs from two $M_o$ hours.

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Problem 26120

1) Practice $3$ $5$ $4$ B C $\sin(\angle A) =$ 2) $8$ $17$ C A $\sin(\angle A) =$ 3) A $20$ $29$ $21$ C B $\sin(\angle A) =$ 4) P $8$ $10$ N $6$ M $\sin(\angle P) =$

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Problem 26121

7. Add or subtract in the indicated base.
$101010_2$ $- 111011_2$

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Problem 26122

Question Solve the following equation for $\theta$ on the interval $[0,2 \pi)$ . $-5 \tan (\theta)+1=-4$
Enter an exact answer, in radians.

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Problem 26123

Multiple Choice Question Growth in GDP per capita is attained only when the growth of output is equal to population growth growth of output exceeds population growth population fails to grow growth of population exceeds output growth

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Problem 26124

Use logarithms to solve. Answer exactly. $e^{a-12} - 2 = -39$ $a =$ No Solution Question Help: VIDEO

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Problem 26125

Solve the equation. $15(x+2)^{4}-17(x+2)^{2}=-4$

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Problem 26126

Basic Trig: Cosine 8) 5 9) 29 4 21 $\cos(\angle A) =$ $\cos(\angle A) =$ 10) 17 8 $\cos(\angle B) =$ Basic Trig: Tangent Practice 11) 5 12) 17 3 8 4 $\tan(\angle A) =$ $\tan(\angle A) =$

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Problem 26127

An angler catches a fish that weighs 20 kg . The fish's bones make up approximately $10 \%$ of the fish's total weight. What is the weight of the fish meat, not including the bones, in pounds? Round to the nearest tenth if necessary. 44.0 40.0 39.6 4.4 4.0

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Problem 26128

Find the Taylor series for $f(x)$ centered at the given value of $a$ . [Assume that $f$ has a power series expansion. Do not show that $R_{n}(x) \rightarrow 0$ .] $\begin{array}{c} f(x)=\sin (x), \quad a=\pi \\ f(x)=\sum_{n=0}^{\infty}(-1)^{n} \cdot \frac{x^{2 n}}{(2 n)!} \end{array}$

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Problem 26129

3. $\qquad$ What is the reference angle for $150^{\circ}$ ? (A) $150^{\circ}$ (B) $60^{\circ}$ (C) $-210^{\circ}$ (D) $30^{\circ}$

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Problem 26130

$\lim _{x \rightarrow-1} \frac{x^{3}+4 x^{2}-3}{x^{5}+5}$

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Problem 26131

Question 2 of 10 Which of the following are solutions to the equation below?
Check all that apply. $(2 x+3)^{2}=10$ A. $x=$ B. $x=$ C. $x=\quad+$ D. $x=$ E. $x=-\quad+$ F. $x=-$

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Problem 26132

Practice 6 In compressing a gas, $355$ J of work is done on the system. At the same time, $185$ J of heat escapes from the system. What is $\Delta U$ for the system?

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Problem 26133

A baseball bat contacts a $0.145-\mathrm{kg}$ baseball for $1.3 \times 10^{-3} \mathrm{~s}$ The average force exerted by the bat on the ball is 8900 N .
Part A
If the ball has an initial velocity of $44 \mathrm{~m} / \mathrm{s}$ toward the bat and the force of the bat causes the ball's motion to reverse direction, what is the ball's speed as it leaves the bat? Express your answer with the appropriate units. $v_{\mathrm{f}}=\text { Valuet }_{\mathrm{s}}^{\mathrm{s}}$ Submit Previous Answers Request Answer Incorrect; Try Again; 9 attempts remaining

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Problem 26134

Question 4 of 10 Complete the square to solve the equation below. $x^2 - 10x - 2 = 17$
A. $x = 6 + \sqrt{30}$ ; $x = 6 - \sqrt{30}$ B. $x = 5 + \sqrt{29}$ ; $x = 5 - \sqrt{29}$ C. $x = 5 + \sqrt{44}$ ; $x = 5 - \sqrt{44}$ D. $x = 5 + \sqrt{55}$ ; $x = 5 - \sqrt{55}$ SUBMIT

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Problem 26135

Question 6 of 10 Which choices are solutions to the following equation? Check all that apply. $x^2 - 5x = -\frac{9}{4}$ A. $x = 2$ B. $x = 4.5$ C. $x = 0.5$ D. $x = -1$

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Problem 26136

Question 7 of 10 What number must be added to the expression below to complete the square? $x^2 + 7x$ A. $\frac{7}{2}$ B. 7 C. 49 D. $\frac{49}{4}$ SUBMIT

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Problem 26137

Question 1 of 10 What is the discriminant of the polynomial below? $2x^2 + 5x - 8$ A. 31 B. -59 C. 89 D. -39 SUBMIT

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Problem 26138

Question 2 of 10 Which two values of $x$ are roots of the polynomial below?
$x^2 - 11x + 17$
A. $x = \frac{11 + \sqrt{-109}}{4}$ B. $x = 3$ C. $x = \frac{11 - \sqrt{-109}}{4}$ D. $x = \frac{11 + \sqrt{53}}{2}$ E. $x = 2.5$ F. $x = \frac{11 - \sqrt{53}}{2}$

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Problem 26139

Question 7 of 10 A number written in the form $a + bi$ is called a _______ number.
A. complex B. quadratic C. linear D. discriminant SUBMIT

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Problem 26140

Question 5 of 10 Using the graph as your guide, complete the following statement. The discriminant of the function is _______. A. zero B. positive C. negative

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Problem 26141

P8-11 Integrative: Expected return, standard deviation, and coefficient of variation Three assets-F, G, and H-are currently under consideration by Perth Industries. The probability distributions of expected returns for these assets are shown in the following table. \begin{tabular}{|c|c|c|c|c|c|c|} \hline \multirow[b]{2}{*}{i} & \multicolumn{2}{|r|}{Asset F} & \multicolumn{2}{|r|}{Asset G} & \multicolumn{2}{|r|}{Asset H} \\ \hline & $P_{r_{i}}$ & Return, $r_{i}$ & $P_{r_{i}}$ & Return, $r_{i}$ & Pri & Return, $r_{i}$ \\ \hline 1 & 0.10 & 40\% & 0.40 & 35\% & 0.10 & 40\% \\ \hline 2 & 0.20 & 10 & 0.30 & 10 & 0.20 & 20 \\ \hline 3 & 0.40 & 0 & 0.30 & $-20$ & 0.40 & 10 \\ \hline 4 & 0.20 & $-5$ & & & 0.20 & 0 \\ \hline 5 & 0.10 & -10 & & & 0.10 & $-20$ \\ \hline \end{tabular} a. Calculate the average return, $\bar{r}$ , for each of the three assets. Which provides the largest average return? b. Calculate the standard deviation, $\sigma_{n}$ , for each asset's returns. Which appears to have the greatest risk? c. Calculate the coefficient of variation, CV, for each asset's returns. Which appears to have the greatest relative risk?

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Problem 26142

Practice 8 How much heat is evolved when 266 g of white phosphorus ( $P_4$ ) burns in air?
$P_4(s) + 5O_2(g) \xrightarrow{\Delta} P_4O_{10}(s)$ $\Delta H = -3013$ kJ

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Problem 26143

Question 2 of 10 Which of the following expressions is equal to $2x^2 + 18$ ? A. $(2x - 6)(x + 3)$ B. $(2x - 9)(x + 2)$ C. $(2x - 6)(x - 3)$ D. $(2x - 9)(x - 2)$ SUBMIT

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Problem 26144

$\text{Le directeur d'un élevage de serpents prétend que } 25\% \text{ de ses reptiles mesurent plus de } 1,5 \, \text{m} \text{ et que } 10\% \text{ d'entre eux dépassent 2 m. Quelle est la longueur moyenne des serpents dans cet élevage? Quel est l'écart type?}$

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Problem 26145

is blazing! 2 streak
Don starts to use the standard algorithm to solve $418 \times 5$ . His work is shown below. $\begin{array}{r} 418 \\ \times \quad 5 \\ \hline \quad 0 \end{array}$
What number should Don replace $y$ with? $\square$

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Problem 26146

Use the following graph to answer questions 4 and 5
4. What does the area under the line represent? a) Force b) Work c) Distance d) Impulse
5. Calculate the area under thes line (a) 50 J tio 251 (4) inst

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Problem 26147

Expanded Form Standard Form 5.28 Word Form Relat (5 x 1) + (2 x 1/10) + (8 x 1/10) (5 x 1) + (2 x 1/10) + (8 x 1/100) forms (5 x 1) + (2 x 1/100) + (8 x 1/100)

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Problem 26148

Question 5 of 10 How many solutions does the nonlinear system of equations graphed below have? A. One B. Zero C. Two D. Four

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Problem 26149

Example Find the characteristic equation of $A = \begin{bmatrix} 5 & -2 & 6 & -1 \\ 0 & 2 & -8 & 0 \\ 0 & 0 & 5 & 1 \\ 0 & 0 & 0 & 1 \end{bmatrix}$ The eigenvalues of a triangular matrix are the entries on its main diagonal.

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Problem 26150

3.
Yukarıda verilen kartlar ters çevrilip karıştrilıyor ve hafiza oyunu oynanıyor. Hafıza oyununda ilk kartı kuğu olarak açan Duru'nun ikinci kartta kuğuyu açma olasııığı aşağıdakilerden hangisidir? A) $\frac{1}{7}$ B) $\frac{2}{7}$ C) $\frac{3}{7}$ D) $\frac{1}{2}$

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Problem 26151

Find the power series expansion of the function $f(x) = \frac{1}{(1-x)^3}$ .

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Problem 26152

You make street signs. This morning, you need to make a triangular sign and a circular sign. The material used to make the signs costs $\$ 17.64$ per square foot. Based on the designs, the base of the triangular street sign is 3 feet, and the height is 2.6 feet. The circular street sign has a radius of 1.5 feet. What is the total cost to make the two signs? \$124.63 \$193.42 \$234.97 \$262.22 \$303.76

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Problem 26153

Question 19 of 42 Step 2 of 2 01:58:46
Consider the following equation: $\frac{-2 x}{x+1}=-2+\frac{1}{x+3}$
Step 2 of 2: Solve the equation, if possible. If there is a solution, express your answer as either an integer or a simplified fraction.
AnswerHow to enter your answer (opens in new window) 2 Points Keypad Keyboard Shortcuts
Separate your answers with commas, if necessary. Selecting a radio button will replace the entered answer value(s) with the radio button value. If the radio button is not selected, the entered answer is used. Next

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Problem 26154

$\sum_{n=1}^{\infty} \frac{2^n}{(n-1)!}$

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Problem 26155

KAAF Graduate Students Survey talked to 1000 students ages 18-35 about personal finance. The survey found that 33% of the students have their own credit card.
a. In a sample of six (6) students, what is the probability that two (2) will have their own credit card? [8 marks]
b. In a sample of six (6) students, what is the probability that at least two (2) will have their own credit card? [7 marks]

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Problem 26156

23. Suppose that $\cos \theta = 1/6$ and that $\theta$ is a Quadrant IV angle.
(a) Find the exact value of $\sin \theta$ . Show work.
(b) Find the exact value of $\sin(2\theta)$ . Show work.

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Problem 26157

```latex \text{Write the four quantum numbers which describe the location of the highest energy electron of the following:}
\text{N} ```

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Problem 26158

A company has 10 employees, and the manager wants to randomly select 3 employees to attend a training workshop. The employees are listed as follows:
1. Alice
2. Bob
3. Charlie
4. David
5. Emma
6. Frank
7. Grace
8. Helen
9. Ian
10. Jack
KAFC 613: Quantitative Methods | End of Sem. Exams - 2024 | S.B. Egala (PhD) 2
a. How many different possible samples of 3 employees can be selected from this population? [6 marks] b. If each sample has an equal chance of being selected, what is the probability of selecting the sample {Alice, Bob, Charlie}? [9 marks]

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Problem 26159

Lesson 4.3
10. Select a strategy and determine the interval(s) for which each inequality is true. a) $(x+1)(x-2)(x+3)^{2}<0$ b) $\frac{(x-4)(2 x+3)}{5} \geq \frac{2 x+3}{5}$ c) $-2(x-1)(2 x+5)(x-7)>0$ d) $x^{3}+x^{2}-21 x+21 \leq 3 x^{2}-2 x+1$

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Problem 26160

Solve the system of linear equations using the Gauss-Jordan elimination method. $\begin{array}{r} x-2 y=9 \\ 4 x+3 y=3 \\ (x, y)=(\boxed{ }) \end{array}$

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Problem 26161

$M(t)=-8 t^{2}+48 t$
Anlgabe 1 Berechne dic Lanne des Produldebernszyklus
2. Berechne den Gesantumsatz der eisten 3 Jahre

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Problem 26162

Determine $\mu_{\bar{x}}$ and $\sigma_{\bar{x}}$ from the given parameters of the population and sample size. $\begin{array}{l} \mu=76, \sigma=7, n=49 \\ \mu_{\bar{x}}=\square \end{array}$ $\square$

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Problem 26163

問 85 曲線 $C: x y=1$ を $-\frac{\pi}{4}$ 回転移動して得られる図形の方程式を求めよ.

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Problem 26164

Ex. 4 Graph $2 x+3 y<9$

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Problem 26165

Question three: " 5 points"
1. Solve the following linear congruence $140x \equiv 56 \pmod{252}$
2. How many incongruent solutions this equation have?

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Problem 26166

3. For the following probability distribution, find $P(2 \leq X<5)$ \begin{tabular}{|l|l|l|l|l|l|l|} \hline $X$ & 1 & 2 & 3 & 4 & 5 & 6 \\ \hline $f(x)$ & 0.03 & 0.14 & & 0.33 & 0.15 & 0.04 \\ \hline \end{tabular}
4. If Z is the standard normal distribution, find the probability that Z lies between $\mathbf{- 2 . 6 8}$ and 0.
5. Assume that the weight loss for the first month of a diet is normally distributed with a mean of 3.6 Kgs and a standard deviation of 0.6 Kgs . Find the probability of at least 5 Kgs weight lost.
6. Suppose that $X$ is normally distributed with a mean of 90 and a standard deviation of 10 , find a value $x$ such that $P(X>x)=0.815$ .

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Problem 26167

Find the indefinite integral. (Remember the constant of integration.) $\int \frac{1}{3 x^{4}} d x$ $\square$
Need Help? Read It $\square$ Master It $\square$ Submit Answer

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Problem 26168

Franklin can jog approximately 2,000 meters in 4 minutes. Express this rate as a unit rate.
800 meters per minute
500 meters per minute
4,000 meters per 8 minutes
300 meters per 5 minutes

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Problem 26169

6. In this question, you will be assessed on the quality of your organisation, communication and accuracy in writing.
A box contains five identical balls numbered 1 to 5 respectively. One ball is chosen at random from the box. Its number is recorded and the ball is replaced in the box.
This process was carried out 75 times in total.
How many times would you expect an even-numbered ball to have been chosen? You must show all your working. $3 + 200$

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Problem 26170

Instruction: The paper consists of THREE questions. Answer question ONE (1) and any one from the rest questions 1 Find the equivalent stiffness for the following structure shown in Fig Q1. Neglect the mass of the bars. (10 marks)
Fig Q1 2 Determine the displacement $x$ velocity $x$ and acceleration $x \ddot{x}$ of a spring-mass system with $\omega_{\mathrm{n}}=10 \mathrm{rad} / \mathrm{s}$ for the initial conditions $\mathrm{x}_{0}=0.05 \mathrm{~m}$ and $\mathrm{x}_{0}=1 \mathrm{~m} / \mathrm{s}$ . ( 10 marks )
3 A circular cylinder of radius $r$ and mass $m$ is connected by spring stiffness $k$ to a rigid support as shown in Fig Q2. Find the natural frequency of free oscillations using energy method (10 marks)
Fig Q3

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Problem 26171

If P16,000 earns P480 in 9 months, what is the annual rate of interest? 3% 2% 1% 4%

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Problem 26172

La relación entre la cantidad total gastada en comida y bebida por los clientes que un camarero atiende en un restaurante durante una semana dete camarero durante esa semana se puede modelar mediante la ecuación $y=0,2 x+300$ , donde $x$ es la cantidad gastada por los clientes en dólares camarero en dỏlares. ¿En cuánto aumenta el ingreso semanal del camarero por cada $\$ 500$ que gastan sus clientes durante esa semana? $\$ 100$ $\$ 300$ $\$ 400$ $\$ 500$

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Problem 26173

21. Find the area of the region under the graph of the function $f(x) = 8x - x^2$ on the interval $[0, 2]$ .

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Problem 26174

Solve the equation for $x$ . $4^{x-x^{2}}=\frac{1}{64^{x}}$ smaller value $\quad x=$ $\square$ larger value $\quad x=$ $\square$

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Problem 26175

$A, B$ олонлогийн ядаж нэгд нь харьяалагдах элементүүдийн олонлогийг уг олонлогуудын нэгдэл гээд $A \cup B$ гэж тэмдэглэдэг. Хэрэв $A = \{\frac{1}{3}, \frac{7}{4}, 2, 4, -3, -2\}$ $B = \{\frac{2}{3}, 2, -3, -4\}$ бол $A \cup B = ?$

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Problem 26176

1) lim x

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Problem 26177

9. (a) Is the ordered pair $\left(\frac{7}{3}, -\frac{1}{2}\right)$ a solution of $3x - 2y \le 8$ ?

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Problem 26178

Solve the following exponential equation. Express the solution set in terms of natural logarithms or common logarithms. Then, use a calculator to obtain a decimal approximation for the solution. $e^{1-8 x}=551$
The solution set expressed in terms of logarithms is $\square$ $\beta$ . (Use a comma to separate answers as needed. Simplify your answer. Use integers or fractions for any numbers expression. Use In for natural logarithm and log for common logarithm.)

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Problem 26179

A 1-kg mass and a 2-kg mass are placed as shown to the left of the beam's center. How far from the right of center should a 3-kg mass be placed to balance the beam? A. 10 cm B. 20 cm C. 30 cm D. 40 cm E. 50 cm F. 60 cm G. None of the above.

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Problem 26180

Find the tangent of $\angle B$ .
$10$ $\sqrt{14}$
Write your answer in simplified, rationalized form. Do not round.
$\tan(B) =$

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Problem 26181

(c) $11-\sqrt{3 x}=4$

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Problem 26182

Which of the following is a point on the graph of $y=\left(\frac{1}{2}\right)^{z}$ ? $(0,0)$ $\left(2, \frac{1}{4}\right)$ $(2,1)$ $\left(0, \frac{1}{2}\right)$

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Problem 26183

Question 7 Convert 4.63 radians into degrees. A 1326.4 degrees B 530.56 degrees C 88.43 degrees D 265.28 degrees

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Problem 26184

$7^{0} \cdot 7^{x}=7^{11}$

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Problem 26185

The solid lies between planes perpendicular to the $x$ -axis at $x = -1$ and $x = 1$ . The cross-sections perpendicular to the $x$ -axis are circular disks whose diameters run from the parabola $y = x^2$ to the parabola $y = 2 - x^2$ . 9. 10. $y = x^2$ $y = 2 - x^2$

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Problem 26186

Two friends, Zachary and Nachelle, had just bought their first cars. Nachelle uses 13 gallons of gas to drive 196.3 miles in her car. The table below represents the number of miles, $y$ , that Zachary can drive his car for every $x$ gallons of gas.
Zachary's Gas Mileage Gallons ( $x$ ) | Miles ( $y$ ) ---|--- 3 | 87 5 | 145 7 | 203 9 | 261
Use the dropdown menu and answer-blank below to form a true statement.
Answer Attempt 1 out of 2
Nachelle's car gets \_\_\_\_\_\_ miles per gallon \_\_\_\_\_\_ than Zachary's car.

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Problem 26187

8. The 50 cent Bluenose is one of Canada's most famous postage stamps. In 1930 it could be bought at the post office for $\$ 0.50$ . In 2000, a stamp in excellent condition was sold at an auction for $\$ 512$ . Determine the doubling time for the stamp's value.
9. Strontium-90 has a half-life of 25 years. How long would it take for 40 mg of it to decay to: a) 20 mg b) 1.25 mg

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Problem 26188

Given $f(x)=7 x-10$ , what is the value of $f(-5)$ ? What is the value of $f(0)$ ? $\Gamma(-5)=$ $\qquad$ $f(0)=$ $\qquad$

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Problem 26189

Question Show Examples
The figure below is rotated $180^{\circ}$ clockwise and then reflected over y -axis. What are the coordinates of the image of point V after these transformations? Answer Astempt 2 out of 2

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Problem 26190

26° 15

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Problem 26191

Question Use the graph of $h(x)$ shown below to evaluate $\lim_{x \to -3} h(x)$ , if possible. If the limit does not exist, enter Ø.

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Problem 26192

Given $A = \begin{pmatrix} 1 & 1 & 2 \\ 0 & 2 & 1 \\ 0 & 0 & 3 \end{pmatrix}$ . Find the eigen values and eigen vector for this matrix.

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Problem 26193

27. Find the half-life of a certain element that vaporizes in the air. If it has an initial volume of 50 mL and vaporized 12 mL in 12 minutes. View answer choices
28. A bacteria was placed inside a 500 mL bottle. Initially, the bacteria has filled up ii. 10 mL of the bottle. After 24 hours, the bottle is completely infested by the bacteria. Find the doubling time of the bacteria: $=$ t View answer choices
29. A radioactive mass was found at 8 am and weighed 50 grams. At 9:30 am it weighed 20 grams. Find the half-life of the mass in hrs. View answer choices
30. An ice block was delivered at 5 am and weighed 110 kg . At 10 am , the block was reduced to 70 kg . Find its half-life. View answer choices

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Problem 26194

Question 8 (1 point) What is the value of $a$ used in describing the confidence interval shown below.
98% $\mu$ a 0.01 b 0.02 c 0.04 d 0.05

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Problem 26195

The following financial statement data for the year ending December 31 are for River Company: \begin{tabular}{|l|r|} \hline Sales & $\$ 2,455,000$ \\ \hline Fixed assets: & \\ \hline Beginning of year & 840,000 \\ \hline End of year & 900,000 \\ \hline \end{tabular}
Determine the fixed asset turnover ratio for the year. a. 2.8 b. 1.4 c. 2.9 d. 2.7

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Problem 26196

The soup pot is 8.5 inches tall with a radius of 4 inches.
What is the volume of the soup pot? Answer choices are rounded to the nearest cubic inch.

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Problem 26197

Solve the following logarithmic equation: $\log_{10}(3x) = 3$ $x = 30$ $x = 300$ $x = 33.33$ $x = 333.33$

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Problem 26198

Express 55 miles per hour in kilometers per hour. km/hr (Round to the nearest whole number as needed.)

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Problem 26199

32. Write $5(\cos 146^\circ + i\sin 146^\circ)$ in standard $a + bi$ form. Round to two decimal places.
A. $2.80 + 4.15i$ B. $-4.15 - 2.80i$ C. $-4.15 + 2.80i$ D. $-1.35 - 1.35i$

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Problem 26200

Question What is $a$ , $f(x)$ , and $L$ given $f(x)$ approaches $L$ as $x$ approaches $a$ in the following limit?
$\lim_{x \to 3} (x^2 - 8x - 3) = -18$
Provide your answer below:
$a =$ $f(x) =$ $L =$
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Solve

Problem 26101

Problem 26102

Problem 26103

One root of f(x)=2x3+9x2+7x−6f(x)=2 x^{3}+9 x^{2}+7 x-6f(x)=2x3+9x2+7x−6 is -3 . Explain how to find the factors of the polynomial. □\square□ RETRY

Problem 26104

Problem 26105

Problem 26106

Juan wants to earn at least $57\$ 57$57 trimming trees. He charges $7\$ 7$7 per hour and pays $6\$ 6$6 in equipment fees. What are the possible numbers of hours Juan could trim trees?Use ttt for the number of hours. Write your answer as an inequality solved for ttt. □\square□

Problem 26107

Problem 26108

1. Calculate the average drift velocity of electrons when a current of 1.5 A is passing through a silver wire of 1.0 mm21.0 \mathrm{~mm}^{2}1.0 mm2 cross-sectional area

Problem 26109

Solve. 25x4−15x2+2=025 x^{4}-15 x^{2}+2=025x4−15x2+2=0

Problem 26110

△XYZ\triangle X Y Z△XYZ. The first is a translation of vertex AAA to vertex XXX What is the second transformation? a reflection across the line containing AB‾\overline{A B}AB a reflection across the line containing AC‾\overline{A C}AC a rotation about point AAA a rotation about point B

Problem 26111

Find the value of f(7)f(7)f(7). y=f(x)y = f(x)y=f(x)

Problem 26112

Compare and order the numbers below from least to greatest. 4.64.64.6, 2.8‾2.\overline{8}2.8, π\piπ, 17\sqrt{17}17​, 7\sqrt{7}7​

Problem 26113

Problem 26114

Problem 26115

Problem 26116

∫0∞e−xxdx=\int_{0}^{\infty} \frac{e^{-\sqrt{x}}}{\sqrt{x}} dx =∫0∞​x​e−x​​dx=

Problem 26117

∫0π3cos⁡−1(3x)dx\int_0^{\frac{\pi}{3}} \cos^{-1}(3x) dx∫03π​​cos−1(3x)dx

Problem 26118

7 A nutrition label states that there ore 36 g of carbohydrates in each serving. This accounts for 12%12 \%12% of the daily value. How many grams of carbohydrates are recommended per day?

Problem 26119

Problem 26120

1) Practice 333 555 444 B C sin⁡(∠A)=\sin(\angle A) =sin(∠A)= 2) 888 171717 C A sin⁡(∠A)=\sin(\angle A) =sin(∠A)= 3) A 202020 292929 212121 C B sin⁡(∠A)=\sin(\angle A) =sin(∠A)= 4) P 888 101010 N 666 M sin⁡(∠P)=\sin(\angle P) =sin(∠P)=

Problem 26121

7. Add or subtract in the indicated base.1010102101010_21010102​ −1110112- 111011_2−1110112​

Problem 26122

Question Solve the following equation for θ\thetaθ on the interval [0,2π)[0,2 \pi)[0,2π). −5tan⁡(θ)+1=−4-5 \tan (\theta)+1=-4−5tan(θ)+1=−4Enter an exact answer, in radians.

Problem 26123

Multiple Choice Question Growth in GDP per capita is attained only when the growth of output is equal to population growth growth of output exceeds population growth population fails to grow growth of population exceeds output growth

Problem 26124

Use logarithms to solve. Answer exactly. ea−12−2=−39e^{a-12} - 2 = -39ea−12−2=−39 a=a =a= No Solution Question Help: VIDEO

Problem 26125

Solve the equation. 15(x+2)4−17(x+2)2=−415(x+2)^{4}-17(x+2)^{2}=-415(x+2)4−17(x+2)2=−4

Problem 26126

Basic Trig: Cosine 8) 5 9) 29 4 21 cos⁡(∠A)=\cos(\angle A) =cos(∠A)= cos⁡(∠A)=\cos(\angle A) =cos(∠A)= 10) 17 8 cos⁡(∠B)=\cos(\angle B) =cos(∠B)= Basic Trig: Tangent Practice 11) 5 12) 17 3 8 4 tan⁡(∠A)=\tan(\angle A) =tan(∠A)= tan⁡(∠A)=\tan(\angle A) =tan(∠A)=

Problem 26127

An angler catches a fish that weighs 20 kg . The fish's bones make up approximately 10%10 \%10% of the fish's total weight. What is the weight of the fish meat, not including the bones, in pounds? Round to the nearest tenth if necessary. 44.0 40.0 39.6 4.4 4.0

Problem 26128

Problem 26129

3. \qquad What is the reference angle for 150∘150^{\circ}150∘ ? (A) 150∘150^{\circ}150∘ (B) 60∘60^{\circ}60∘ (C) −210∘-210^{\circ}−210∘ (D) 30∘30^{\circ}30∘

Problem 26130

lim⁡x→−1x3+4x2−3x5+5\lim _{x \rightarrow-1} \frac{x^{3}+4 x^{2}-3}{x^{5}+5}limx→−1​x5+5x3+4x2−3​

Problem 26131

Question 2 of 10 Which of the following are solutions to the equation below?Check all that apply. (2x+3)2=10(2 x+3)^{2}=10(2x+3)2=10 A. x=x=x= B. x=x=x= C. x=+x=\quad+x=+ D. x=x=x= E. x=−+x=-\quad+x=−+ F. x=−x=-x=−

Problem 26132

Practice 6 In compressing a gas, 355355355 J of work is done on the system. At the same time, 185185185 J of heat escapes from the system. What is ΔU\Delta UΔU for the system?

Problem 26133

Problem 26134

Problem 26135

Question 6 of 10 Which choices are solutions to the following equation? Check all that apply. x2−5x=−94x^2 - 5x = -\frac{9}{4}x2−5x=−49​ A. x=2x = 2x=2 B. x=4.5x = 4.5x=4.5 C. x=0.5x = 0.5x=0.5 D. x=−1x = -1x=−1

Problem 26136

Question 7 of 10 What number must be added to the expression below to complete the square? x2+7xx^2 + 7xx2+7x A. 72\frac{7}{2}27​ B. 7 C. 49 D. 494\frac{49}{4}449​ SUBMIT

Problem 26137

Question 1 of 10 What is the discriminant of the polynomial below? 2x2+5x−82x^2 + 5x - 82x2+5x−8 A. 31 B. -59 C. 89 D. -39 SUBMIT

Problem 26138

Problem 26139

Question 7 of 10 A number written in the form a+bia + bia+bi is called a _______ number.A. complex B. quadratic C. linear D. discriminant SUBMIT

Problem 26140

Question 5 of 10 Using the graph as your guide, complete the following statement. The discriminant of the function is _______. A. zero B. positive C. negative

Problem 26141

Problem 26142

Practice 8 How much heat is evolved when 266 g of white phosphorus (P4P_4P4​) burns in air?P4(s)+5O2(g)undefinedΔP4O10(s)P_4(s) + 5O_2(g) \xrightarrow{\Delta} P_4O_{10}(s)P4​(s)+5O2​(g)Δ​P4​O10​(s) ΔH=−3013\Delta H = -3013ΔH=−3013 kJ

Problem 26143

Question 2 of 10 Which of the following expressions is equal to 2x2+182x^2 + 182x2+18? A. (2x−6)(x+3)(2x - 6)(x + 3)(2x−6)(x+3) B. (2x−9)(x+2)(2x - 9)(x + 2)(2x−9)(x+2) C. (2x−6)(x−3)(2x - 6)(x - 3)(2x−6)(x−3) D. (2x−9)(x−2)(2x - 9)(x - 2)(2x−9)(x−2) SUBMIT

Problem 26144

Problem 26145

is blazing! 2 streakDon starts to use the standard algorithm to solve 418×5418 \times 5418×5. His work is shown below. 418×50\begin{array}{r} 418 \\ \times \quad 5 \\ \hline \quad 0 \end{array}418×50​​What number should Don replace yyy with? □\square□

Problem 26146

Use the following graph to answer questions 4 and 54. What does the area under the line represent? a) Force b) Work c) Distance d) Impulse5. Calculate the area under thes line (a) 50 J tio 251 (4) inst

Problem 26147

Expanded Form Standard Form 5.28 Word Form Relat (5 x 1) + (2 x 1/10) + (8 x 1/10) (5 x 1) + (2 x 1/10) + (8 x 1/100) forms (5 x 1) + (2 x 1/100) + (8 x 1/100)

One root of $f(x)=2 x^{3}+9 x^{2}+7 x-6$ is -3 . Explain how to find the factors of the polynomial. $\square$ RETRY

Juan wants to earn at least $\$ 57$ trimming trees. He charges $\$ 7$ per hour and pays $\$ 6$ in equipment fees. What are the possible numbers of hours Juan could trim trees?
Use $t$ for the number of hours. Write your answer as an inequality solved for $t$ . $\square$

1. Calculate the average drift velocity of electrons when a current of 1.5 A is passing through a silver wire of $1.0 \mathrm{~mm}^{2}$ cross-sectional area

Solve. $25 x^{4}-15 x^{2}+2=0$

$\triangle X Y Z$ . The first is a translation of vertex $A$ to vertex $X$ What is the second transformation? a reflection across the line containing $\overline{A B}$ a reflection across the line containing $\overline{A C}$ a rotation about point $A$ a rotation about point B

Find the value of $f(7)$ . $y = f(x)$

Compare and order the numbers below from least to greatest. $4.6$ , $2.\overline{8}$ , $\pi$ , $\sqrt{17}$ , $\sqrt{7}$

$\int_{0}^{\infty} \frac{e^{-\sqrt{x}}}{\sqrt{x}} dx =$

$\int_0^{\frac{\pi}{3}} \cos^{-1}(3x) dx$

7 A nutrition label states that there ore 36 g of carbohydrates in each serving. This accounts for $12 \%$ of the daily value. How many grams of carbohydrates are recommended per day?

1) Practice $3$ $5$ $4$ B C $\sin(\angle A) =$ 2) $8$ $17$ C A $\sin(\angle A) =$ 3) A $20$ $29$ $21$ C B $\sin(\angle A) =$ 4) P $8$ $10$ N $6$ M $\sin(\angle P) =$

7. Add or subtract in the indicated base.
$101010_2$ $- 111011_2$

Question Solve the following equation for $\theta$ on the interval $[0,2 \pi)$ . $-5 \tan (\theta)+1=-4$
Enter an exact answer, in radians.

Use logarithms to solve. Answer exactly. $e^{a-12} - 2 = -39$ $a =$ No Solution Question Help: VIDEO

Solve the equation. $15(x+2)^{4}-17(x+2)^{2}=-4$

Basic Trig: Cosine 8) 5 9) 29 4 21 $\cos(\angle A) =$ $\cos(\angle A) =$ 10) 17 8 $\cos(\angle B) =$ Basic Trig: Tangent Practice 11) 5 12) 17 3 8 4 $\tan(\angle A) =$ $\tan(\angle A) =$

An angler catches a fish that weighs 20 kg . The fish's bones make up approximately $10 \%$ of the fish's total weight. What is the weight of the fish meat, not including the bones, in pounds? Round to the nearest tenth if necessary. 44.0 40.0 39.6 4.4 4.0

3. $\qquad$ What is the reference angle for $150^{\circ}$ ? (A) $150^{\circ}$ (B) $60^{\circ}$ (C) $-210^{\circ}$ (D) $30^{\circ}$

$\lim _{x \rightarrow-1} \frac{x^{3}+4 x^{2}-3}{x^{5}+5}$

Question 2 of 10 Which of the following are solutions to the equation below?
Check all that apply. $(2 x+3)^{2}=10$ A. $x=$ B. $x=$ C. $x=\quad+$ D. $x=$ E. $x=-\quad+$ F. $x=-$

Practice 6 In compressing a gas, $355$ J of work is done on the system. At the same time, $185$ J of heat escapes from the system. What is $\Delta U$ for the system?

Question 6 of 10 Which choices are solutions to the following equation? Check all that apply. $x^2 - 5x = -\frac{9}{4}$ A. $x = 2$ B. $x = 4.5$ C. $x = 0.5$ D. $x = -1$

Question 7 of 10 What number must be added to the expression below to complete the square? $x^2 + 7x$ A. $\frac{7}{2}$ B. 7 C. 49 D. $\frac{49}{4}$ SUBMIT

Question 1 of 10 What is the discriminant of the polynomial below? $2x^2 + 5x - 8$ A. 31 B. -59 C. 89 D. -39 SUBMIT

Question 7 of 10 A number written in the form $a + bi$ is called a _______ number.
A. complex B. quadratic C. linear D. discriminant SUBMIT

Practice 8 How much heat is evolved when 266 g of white phosphorus ( $P_4$ ) burns in air?
$P_4(s) + 5O_2(g) \xrightarrow{\Delta} P_4O_{10}(s)$ $\Delta H = -3013$ kJ

Question 2 of 10 Which of the following expressions is equal to $2x^2 + 18$ ? A. $(2x - 6)(x + 3)$ B. $(2x - 9)(x + 2)$ C. $(2x - 6)(x - 3)$ D. $(2x - 9)(x - 2)$ SUBMIT

is blazing! 2 streak
Don starts to use the standard algorithm to solve $418 \times 5$ . His work is shown below. $\begin{array}{r} 418 \\ \times \quad 5 \\ \hline \quad 0 \end{array}$
What number should Don replace $y$ with? $\square$

Use the following graph to answer questions 4 and 5
4. What does the area under the line represent? a) Force b) Work c) Distance d) Impulse
5. Calculate the area under thes line (a) 50 J tio 251 (4) inst

Find the power series expansion of the function $f(x) = \frac{1}{(1-x)^3}$ .

$\sum_{n=1}^{\infty} \frac{2^n}{(n-1)!}$

23. Suppose that $\cos \theta = 1/6$ and that $\theta$ is a Quadrant IV angle.
(a) Find the exact value of $\sin \theta$ . Show work.
(b) Find the exact value of $\sin(2\theta)$ . Show work.

```latex \text{Write the four quantum numbers which describe the location of the highest energy electron of the following:}
\text{N} ```

Solve the system of linear equations using the Gauss-Jordan elimination method. $\begin{array}{r} x-2 y=9 \\ 4 x+3 y=3 \\ (x, y)=(\boxed{ }) \end{array}$

$M(t)=-8 t^{2}+48 t$
Anlgabe 1 Berechne dic Lanne des Produldebernszyklus
2. Berechne den Gesantumsatz der eisten 3 Jahre

Determine $\mu_{\bar{x}}$ and $\sigma_{\bar{x}}$ from the given parameters of the population and sample size. $\begin{array}{l} \mu=76, \sigma=7, n=49 \\ \mu_{\bar{x}}=\square \end{array}$ $\square$

問 85 曲線 $C: x y=1$ を $-\frac{\pi}{4}$ 回転移動して得られる図形の方程式を求めよ.

Ex. 4 Graph $2 x+3 y<9$

Question three: " 5 points"
1. Solve the following linear congruence $140x \equiv 56 \pmod{252}$
2. How many incongruent solutions this equation have?

Find the indefinite integral. (Remember the constant of integration.) $\int \frac{1}{3 x^{4}} d x$ $\square$
Need Help? Read It $\square$ Master It $\square$ Submit Answer

Franklin can jog approximately 2,000 meters in 4 minutes. Express this rate as a unit rate.
800 meters per minute
500 meters per minute
4,000 meters per 8 minutes
300 meters per 5 minutes

21. Find the area of the region under the graph of the function $f(x) = 8x - x^2$ on the interval $[0, 2]$ .

Solve the equation for $x$ . $4^{x-x^{2}}=\frac{1}{64^{x}}$ smaller value $\quad x=$ $\square$ larger value $\quad x=$ $\square$