4. Find the value of the variable(s) that makes the equation true.
a. 710=75⋅7f
b. 3h⋅3h⋅3h=−13f=h=
c. m⋅m=26
d. 6575=(76)ym=y=
e. 3512=(35x)2
f. (109)−1=rc
g. 180=18718wc=x=r=
Answer the questions about the following function.
f(x)=2x2−x−1
(a) Is the point (2,5) on the graph of f ?
(b) If x=−2, what is f(x) ? What point is on the graph of f ?
(c) If f(x)=−1, what is x ? What point(s) are on the graph of f ?
(d) What is the domain of f ?
(e) List the x -intercept(s), if any, of the graph of f .
(f) List the y-intercept, if there is one, of the graph of f.
Assuming a is a positive real number, use properties of logarithms to write the expression as a sum or difference logarithms or multiples of logarithms. Expand the expression as far as possible.
ln(4a)ln(4a)=□
(Type an exact answer in simplified form.)
Graph the function below, and analyze it for domain, range, continuity, increasing or decreas asymptotes, and end behavior.
f(x)=log5(125x) The domain is □
(Type your answer in interval notation.)
asymptotes, and end behavior.
f(x)=log5(125x) The domain is (0,∞).
(Type your answer in interval notation.)
The range is □
(Type your answer in interval notation.)
asymptotes, and end behavior.
f(x)=log5(125x)
B. There is no vertical asymptote. Choose the correct choice below and, if necessary, fill in the answe
A. The horizontal asymptote(s) is/are □ .
(Simplify your answer. Type an equation. Use a comma to
Directions: Find the inverse of the following functions. Be sure to show all work and use proper notation. 8. f(x)=x+2x−3 9. h(x)=2x+34x−1x=y+2y−3x(y+2)=y−3xy+2x=y−32x−3=y−xy2x−3=y(1−x)y=1−x2x−3x=2y+34y−1x(2y+3)=4y−12xy+3x=4y−13x+1=4y−2xy3x+1=y(4−2x)h(x)−1=y=4−2x3x+1 10. y=x−5x+4 11. g(x)=3x+72x+1
Directions: Find the inverse of the following functions. Be sure to show all work and use proper notation. 8. f(x)=x+2x−3 9. h(x)=2x+34x−1x=y+2y−3x(y+2)=y−3xy+2x=y−32x−3=y−xy2x−3=y(1−x)y=1−x2x−3x=2y+34y−1x(2y+3)=4y−12xy+3x=4y−13x+1=4y−2xy3x+1=y(4−2x)h(x)−1=y=4−2x3x+1 10. y=x−5x+4 11. g(x)=3x+72x+1
Use the change-of-base formula and a calculator to evaluate
log615 Rewrite the expression with common logarithms using the change-of-bas
log615=log(6)log(15)
(Use integers or decimals for any numbers in the expression.)
Find the approximation.
log615≈□
(Simplify your answer. Round to three decimal places as needed.)
Use the change-of-base formula and a calculator to evaluate the logarithm.
log7175log7175=□
(Simplify your answer. Type an integer or decimal rounded to three decimal plac
The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. What parameter is being tested?
H0:σ=110H1:σ>110 Is the hypothesis test left-tailed, right-tailed, or two-tailed?
Right-tailed test
Two-tailed test
Left-tailed test What parameter is being tested?
Population proportion
Population standard deviation
Population mean
∫(9x−8)21dx Use a change of variables or the table of general integration formulas to evaluate the following indefinite integral. Check your work by differentiating.
Click the icon to view the table of general integration formulas.
Find the Radius R and Interval I of convergence for the given power series. n=1∑∞n!4n(x+7)n R= I= If the interval is just a single point, enter just the number: i.e., if your answer is {−12}, enter just −12.
Determine the remainder for the following divisions using the remainder theorem. If the divisor is a factor of the dividend, so state.
(x3−4x2+6x−4)÷(x−2)
When x3−4x2+6x−4 is divided by x−2, the remainder is □.
The function f(x) is twice differentiable on the closed interval [−3,4]. Selected values of f(x), f′(x), and f′′(x) are given in the table above. A) Show that there must be a value c, −3<c<4, such that f(c)=1? Justify your answer.
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)=x3+9x2+25x+21, including factors for and non-real zeros. Use radicals, not decimal approximations. The zeros are | |
Simplify the expression.
2x−12x2−9x+4 Select the correct choice below and fill in any answ
A. 2x−12x2−9x+4=□ (Simplify your answer.)
B. The expression cannot be simplified.
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 Rn(x)→0.]
f(x)=sin(x),a=πf(x)=∑n=0∞(−1)n⋅(2n)!x2n
Question 4 of 10
Complete the square to solve the equation below.
x2−10x−2=17 A. x=6+30; x=6−30
B. x=5+29; x=5−29
C. x=5+44; x=5−44
D. x=5+55; x=5−55
SUBMIT