The table of values shows a linear relationship between x and y.
\begin{tabular}{|c|c|}
\hlinex & y \\
\hline-7 & 9 \\
\hline-2 & 1 \\
\hline 3 & -7 \\
\hline 8 & -15 \\
\hline
\end{tabular} What is the slope of the line represented by the table of values?
System C Line 1: y=−x+1 Line 2: y=−21x+21 This system of equations is:
consistent dependent
consistent independent
inconsistent
This means the system has:
a unique solution
Solution: □□
infinitely many solutions
no solution
Solve the following system by substitution.
2x−y=−74y−x=7 Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
(Simplify your answer.)
A. There is one solution. The solution set is □ \}. (Type an ordered pair.)
B. There are infinitely many solutions. The solution set is {(□,y)}, where y is any real number.
C. The solution set is ∅.
Find the missing values by solving the parallelogram shown in the figure. (The lengths of the diagonals are given by c and d. Round your answers to two decimal places.)
a=□b=29c=58d=39θ=□∘φ=□∘
Let S={E1,E2,E3,E4} be the sample space of an experiment. Event A={E1,E2}. Event B={E3}. Event C={E2,E3}. The probabilities of the sample points are assigned as follows:
\begin{tabular}{cc}
\hline Sample point & Probability \\
\hlineE1 & 0.1374 \\
E2 & 0.1301 \\
E3 & 0.1854 \\
E4 & 0.5471 \\
\hline
\end{tabular} Then, the events A and B are independent. Select one:
a. False
b. True
Exercise 2. Circle the right answer 1. The graph of y=2+3+x can be obtained from the graph of y=x by
a. Shifting the graph 3 units up then 2 units left
b. Shifting the graph 3 units left then 2 units up
c. Shifting the graph 3 units down then 2 units right
d. Shifting the graph 2 units down then 3 units right 2. The graph of y=2+x−3 can be obtained from the graph of y=x by
a. Shifting the graph 3 units up then 2 units left
b. Shifting the graph 2 units up then 3 units left
c. Shifting the graph 3 units right and 2 units up
d. Shifting the graph 2 units down then 3 units right 3. The graph of y=2+3+x1 can be obtained from the graph of y=x1 by
a. Shifting the graph 3 units left then 2 units up
b. Shifting the graph 3 units up then 2 units left
c. Shifting the graph 3 units down then 2 units right
d. Shifting the graph 2 units down then 3 units right
42 4. The graph of y=2−(x−3)2 can be obtained from the graph of y=x2 by
a. Shifting the graph 3 units up then 2 units left
b. Shifting the graph 2 units up then 3 units left
c. Shifting the graph 3 units down then 2 units right
d. Shifting the graph 3 units right, reflected about the x-axis, then shifting 2 units up 5. The graph of y=2+(x+3)2 can be obtained from the graph of y=x2 by
a. Shifting the graph 3 units up then 2 units left
b. Shifting the graph 2 units up then 3 units left
c. Shifting the graph 3 units down then 2 units right
d. Shifting the graph 2 units down then 3 units right
Step 3
We now use the substitution u=x7+7x and du=(7x6+7)dx to convert the entire integral into one involving only u.
∫(x7+7x)27x6+7dx=∫((x7+7x)21)((7x6+7)dx)=∫(□)du
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Next, we integrate the resulting integral with respect to u using the Power Rule. (Use C for the constant of integration.)
∫u21du=∫u−2du=□ Finally, replace u by g(x)=x7+7x to obtain the solution as a function of x. (Use C for the constant of integration.)
□
le récipient à l'état d'équilibre. 64. Quand on met 1,88mol d'hydrogène gazeux et 2,86mol d'iode gazeux dans un récipient de 2,00L, un équilibre est atteint avec l'iodure d'hydrogène gazeux; la valeur de Kc est de 55,3 à 700 K . Détermine la quantité (en moles) de chaque réactif et du produit dans le récipient quand l'équilibre est établi.
Determine whether the Law of Sines or the Law of Cosines is needed to solve the triangle.
B=12∘,a=155,b=65
Law of Sines
Law of Cosines Solve (if possible) the triangle. If two solutions exist, find both. Round your answers to two decimal places. (If two solutions exist, enter the solution set with the each corresponding answer blank.)
smaller A-value
A1=□C1=□c1=□
larger A-value
A2=□∘c2=□∘c2=□∘
12. The graph of y=3−∣x−2∣ can be obtained from y=∣x∣ by
a) Shifting y=∣x∣ 2units up and 3 units right.
b) Shifting y=∣x∣2 units right, reflecting it about the x-axis, and shifting down 3 units.
c) Shifting y=∣x∣2 units left, reflecting it about the x-axis, and shifting up 3 units.
d) Shifting y=∣x∣ 2units right, reflecting it about the x-axis, and shifting up 3 units 13. The graph of y=5−(x−3)3 can be obtained from y=x3 by
a) Shifting y=x33 units right, reflecting it about the y-axis, and shifting up 5 units.
44
b) Shifting y=x33 units left, reflecting it about the x-axis, and shifting up 5 units.
c) Shifting y=x33 units up and 5 units right.
d) Shifting y=x33 units right, reflecting it about the x-axis, and shifting up 5 units. Exercise 3. Answer the following 1. If the graph of f(x)=x2 is shifted 4 units right, reflected about the x-axis and shifted 10 units up, then the graph of f(x) becomes: 2. If the graph of f(x)=x3 is shifted 2 units right, reflected about the x-axis and shifted 1 units down, then the graph of f(x) becomes: Exercise 4. Use the graph of f(x)=x3 to sketch the following graphs
a) f(x+2)
b) f(x)+2
c) f(x−1)+2
(1) Felipe makes a bracelet with 10 beads. The table shows the number of beads of each color on the bracelet. Which statement about Felipe's bracelet is true?
\begin{tabular}{|l|c|}
\hline Color & Number of Beads \\
\hline Blue & 3 \\
\hline Green & 2 \\
\hline Red & 5 \\
\hline
\end{tabular} A The ratio of green beads to red beads is 5 to 2 .
B For every 3 blue beads, there are 2 red beads.
C The ratio of green beads to total beads is 2 to 10 .
D For every 5 red beads, there are 5 total heads on the hrarolot
Fill in the blanks below in order to justify whether or not the mapping shown represents a function. Answer
Attempt 1 out of 2 The mapping diagram above □ a function
since □ in □ where there □□
Mike is driving home from school for Thanksgiving. Shown here is the graph of the distance from Mike's home to his school as a function of time. How many miles from home is Mike's school?
(1 point) The distance from Mike's home to his school is □ miles.
wo augmented matrices for two linear systems in the variables x,y, and z are given The augmented matrices are in reduced row-echelon form. For each system, choose the best description of its solution. If applicable, give the solution.
(a)
⎣⎡100010−20014−7⎦⎤
The system has no solution.
The system has a unique solution.
□□□(x,y,z)=(□,□,□)
The system has infinitely many solutions.
(x,y,z)=(x,□,□)(x,y,z)=(□,y,□)(x,y,z)=(□,□,z)
Any basketball fan knows that Shaquille O'Neal, one of the NBA's most dominant centers of the last twenty years, always had difficulty shooting free throws. Over the course of his career, his overall made free-throw percentage was 53.3%. During one off season, Shaq had been working with an assistant coach on his free-throw technique. During the next season, a simple random sample showed that Shaq made 26 of 39 free-throw attempts. Test the claim at the 0.05 SL that Shaq has significantly improved his free-throw shooting.
H0:p=−0.533Ha :p =□ 0.533
p-hat: □ 0.667
Mike is driving home from school for Thanksgiving. Shown here is the graph of the distance from Mike's home to his school as a function of time. How many miles from home is Mike's school?
(1 point) The distance from Mike's home to his school is 20 miles.
\begin{tabular}{|c|c|c|}
\hline \multicolumn{3}{|l|}{\begin{tabular}{l|l} 1. Factual Recall & 2. Carry out a Procedure
\end{tabular}} \\
\hline \multicolumn{2}{|l|}{The function f is logarithmic. The table shows output values over equal-length output value intervals. Complete the input values of the table.} & \multirow[t]{7}{*}{A logarithmic function has the form of g(x)=a⋅logbx, where a>1 and b is the base. Use the table in \#1 to find a and b.} \\
\hline x & f(x) & \\
\hline 1/9 & -4 & \\
\hline 1/3 & -2 & \\
\hline 0 & 0 & \\
\hline 2 & 2 & \\
\hline 4 & 4 & \\
\hline
\end{tabular}
3. Classity a Mathematical Object The number of bacteria, b, grows continuously in a culture. There are initially 25 bacteria in the culture and the model is b=25et/2. Which of the following indicates the correct logarithmic function, that gives time, t in days, as the output value for an input value of b bacteria?
\begin{tabular}{|l|l|}
\hline & Logarithmic Model [t=f(b) days ] \\
\hline & t=f(b)=2log2(25b) \\
\hline & t=f(b)=2ln(25b) \\
\hline & t=f(b)=2ln(b−25) \\
\hline
\end{tabular}
- Doise leved at various area urban haspital wre messarnal in decibols samplestandard deviation from aprevious study was 8 decibel emen of the reise leuds in 26 rond ouly selected corridars was 61.2 disible d a 95% contidace intored of the true mom (Sample men)
same but 98%s=87=61.2n=23
b-distribuation
A logarithmic function has the form of h(x)=5⋅logbx+d, where b is the base and d is a constant. The function contains the input-output pairs of (10,12) and (100,17).
1) Write two equations that could be used to find the values of a and b.
2) Show that b=10 and d=7 are solutions.
66. Le trichlorure de phosphoryle, POCl3(g), est utilisé dans la fabrication de produits ignifuges. On le fabrique au moyen d'un procédé d'équilibre dans lequel le trichlorure de phosphore réagit avec le dioxyde d'azote pour former du POCl3(g) et du NO(g) selon l'équation suivante:
PCl3(g)+NO2(g)⇌POCl3(g)+NO(g) La valeur de Kc dans cette réaction à 800 K est de 1,82 . Si on met 1,86mol de PCl3(g) et 1,64mol de NO2(g) dans un récipient de 2,00L, quelle sera la quantité, en moles, de chaque gaz à l'état d'équilibre à 800 K ?
Question
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Show Examples What is the equation of the line that passes through the point (3,7) and has a slope of 32 ? Answer Attempt 1 out of 2
Submit Answer
The following data represent the muzzle velocity (in feet per second) of rounds fired from a 155-mm gun. For each round, two measurements of the velocity were recorded using two different measuring devices, resulting in the following data. Complete parts (a) through (d) below.
\begin{tabular}{lcccccc}
Observation & 1 & 2 & 3 & 4 & 5 & 6 \\
A & 792.1 & 793.4 & 792.3 & 790.5 & 791.8 & 791.4 \\
B & 794.9 & 791.6 & 799.8 & 788.2 & 794.0 & 788.8
\end{tabular}
C. Two measurements (A and B) are taken on the same round.
D. All the measurements came from rounds fired from the same gun.
(b) Is there a difference in the measurement of the muzzle velocity between device A and device B at the α=0.01 level of significance? Note: A normal probability plot and boxplot of the data indicate that the differences are approximately normally distributed with no outliers.
Let di=Ai−Bi. Identify the null and alternative hypotheses.
H0:μd=0H1:μd=0 Determine the test statistic for this hypothesis test.
t0=−0.60 (Round to two decimal places as needed.)
Find the P -value.
P-value =□ (Round to three decimal places as needed.)
A variable x is normally distributed with mean 24 and standard deviation 9. Round your answers to the nearest hundredth as needed.
a) Determine the z-score for x=29.
z=0.56>0∞
b) Determine the z-score for x=23.
z=
c) What value of x has a z-score of 0.67 ?
x=□ Enter an integer or decimal number [more..
d) What value of x has a z-score of 0 ?
x=24
e) What value of x has a z-score of 0 ?
x=240∘
Question
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Show Examples Write the equation of the line that passes through the points (0,9) and (0,7). Put your answer in fully simplified point-slope form, unless it is a vertical or horizontal line.
Answer Attempt 1 out of 2
AISA
5 to the 8th power -
Start Page Jaxon has two bins. The bins are shaped like cubes with the dimensions shown. Write an algebraic expression that Jaxon can use to find the total volume, in cubic inches, of the two bins for any value of x. Then find the total volume of the bins when x=4. Use the number pad and x to enter your answers in the boxes. Algebraic Expression: 125+x3 Total Volume when x=4:189
Name \& Far b
we can add with bigger numbers!
(1) I have 16. Adding with teen Extra Practice
numbers Unit 3. 11
Then I get 3 more.
Now I have (2) Make it
14+3= (17 Equation
\begin{tabular}{|l|l|l|l|l|}
\hlinea & 0 & ⋅ & & n \\
\hline & & & & \\
\hline
\end{tabular}
□□
(3) Make it a 3
=15+2
\begin{tabular}{l}
4 30+2=10+20+1+1 \\
\hline□ \\
\hline
\end{tabular}
Irue?
Illustrative Math Friendly Extra Practice for Fists Grode OK
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The bar graph on the right shows the average cost of room and board at four-year public and private colleges for four selected years from 2011 through 2017. The data can be modeled by f(x)=956x+3056 and g(x)=3943e0.138x in which f(x) and g(x) represent the average cost of room and board at public four-year colleges in the school year ending x years after 2010. Use these functions to complete parts (a) through (c) below. Average Cost of Room and Board at Four-Year Colleges a. According to the linear model, what was the average cost of room and board at public four-year colleges for the school year ending in 2015? The average cost in 2015 was \$7836.
(Round to the nearest dollar as needed.) b. According to the exponential model, what was the average cost of room and board at public four-year colleges for the school year ending in 2015? The average cost in 2015 was \$\square.
(Round to the nearest dollar as needed.)
```
Rewrite the following equation in slope-intercept form.
−3y−11=11x Write your answer using integers, proper fractions, and improper fractions in simplest form.
2. Draw a parallelogram and a rhombus. Explain how they are alike and how they are different. 3. Adrian went to his friend's house at 3:30 to play Legos. His mother came to take him back home at 4:45. How much time did Adrian have to play? 4. Solve the following addition and subtraction problems. Show your work. 534 - 195 294+309
4 Expert Task HW
FUSD
10
A spinner with 5 equally sized slices has 2 red slices, 2 yellow slices, and 1 blue slice. Kala spun the dial 1000 times and got the following results.
\begin{tabular}{|c|c|c|c|}
\hline Outcome & Red & Yellow & Blue \\
\hline Number of Spins & 391 & 410 & 199 \\
\hline
\end{tabular} Answer the following. Round your answers to the nearest thousandths.
(a) From Kala's results, compute the experimental probability of landing on blue. (b) Assuming that the spinner is fair, compute the theoretical probability of landing on blue.
□
(c) Assuming that the spinner is fair, choose the statement below that is true.
will be close to the theoretical probability.
Classify the Sampling Technique:
* 1 point Principal of your school randomly chooses 6 classrooms during period 2 and then randomly selects 5 students from each of the selected classrooms for a survey on bullying.
Systematic
Cluster Random
Voluntary Response
Simple Random Match each term:
1 point The population is invited to respond.
cluster sample
random sample
voluntary response sample
convenience sample
systematic sample
multi - stage sample
1. La gráfica muestra la altura de un ave en comparación con el nivel del suelo. ¿Qué representa el intercepto en y ?
(A) El ave comenzó el vuelo desde el nivel del suelo.
(B) El ave comenzó el vuelo a 2 pies del suelo.
(C) El ave asciende a una velocidad de 4 pies por segundo.
(D) El ave asciende a una velocidad de 8 ples por segundo. 2. La gráfica muestra la velocidad de ascenso de una buzo a la superficie. ¿Qué representa el intercepto en y ?
(A) La buzo ascendió 10 metros por minuta.
(B) La buzo comenzó en la superficie del agua.
C) La buzo terminó su ascenso a 35 metros de profundidad.
(D) La buzo comenzó su ascenso a 35 metros de profundidad. 3. Selecciona todos los enunciados que podrian describir la gráfica de una relación lineal no proporcional.
El intercepto en y es positivo.
El intercepto en yes 0 .
La recta interseca el origen. 4. La grafica muestra la cantidad de gasolina que hay en el tanque de Mark. Completa la oración para que el enunciado sea verdadero.
Ei intercepto en y indica que en el tanque
inicialmente habia □ 375
15
El intercepto en y es negativo.
galones de gasolina. 5. Jana gana $25 por semana por cortar el césped. La cantidad de dinero de la cuenta de Jana se puede
representar con la ecuación y=25x+125, donde x es la cantidad de semanas que ha cortado el césped. ¿Qué representa el intercepto en y ?
(A) La cantidad de dinero que tiene Jana despuês de cortar 5 céspedes
(B) La cantidad de dinero que gana Jana por cortar cada césped
(C) La cantidad de dinero en la cuenta de lana antes de cortar céspedes
(D) La cantidad de dinero que deposita lana despues de I semana de cortar céspedes
Match each term:
1 Every nth member of a population is chosen.
cluster sample
random sample
voluntary response sample
convenience sample
systematic sample
multi - stage sample Indicate whether each variable is continuous or discrete. *
1 Speeds of vehicles on the highway.
Continuous
Discrete
The equation below describes a proportional relationship between x and y. What is the constant of proportionality
y=72x The constant of proportionality is □
A student is conducting a study on the amount of time that high school students spend on the computer. She decides to start asking a sample of 30 students in the school how many hours they spend on the computer on a typical weekday night. Identify the type of sample in each of the following survey methods. She selects every 36th student on the alphabetized list of the 1,100 students.
Systematic
Stratified
Simple Random
Cluster
When we employ
we are evaluating a project on the basis of its incremental cash flows, thereby ignoring the other cash flows of the firm. Multiple Choice
The stand-alone principle.
The equivalence theorem.
The law of one price.
Bell's theorem.
The equivalent annual cost procedure.
5-MATH ADVANCED 72-ROOM A-2
\#15.) 2-4: Constant of Proportionality - MathXL The equation P=5 s represents the perimeter P of a regular pentagon with side length s . What is the perimeter of a regular pentagon with side length 7 km ? The perimeter is □ km .
Match each term:
Every nth member of a population is chosen.
cluster sample
random sample
voluntary response sample
convenience sample
systematic sample
multi - stage sample Identify the type of Bias:
* 1 point An election pollster used convenience sampling to determine the favourite party in a national election.
Response Bias
Measurement Bias
Non-Response Bias
Sampling Bias
In a certain chemical, the ratio of zinc to copper is 3 to 19. A jar of the chemical contains 836 grams of copper. How many grams of zinc does it contair It contains □ grams of zinc.