Graph the expression on each side of the equals symbol to determine whether the equation might be an identity.
= -2tan2 x
A. Not an Identity
B. Identity
Answer: A
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Use a calculator to approximate the area of the surface generated when the given curve is revolved about the x-axis. Round to two decimal places when necessary.y = x9 on [0, 1]
A. 0.09 B. 1.31 C. 0.34 D. 3.24
Solve.Byron rode his bicycle 3
miles on each of 4 days. What is the total distance Byron rode?
A. 7
miles
B. 12
miles
C. 12
miles
D. 12
miles
Find the mean, variance, and standard deviation of the normal density function 
. Do not use integration.
?
A. expected value (mean): -3variance: 36standard deviation: 6? B. expected value (mean): 36variance:-3standard deviation: 6? C. expected value (mean): 36variance: 6standard deviation: -3? D. expected value (mean): 6variance: -3standard deviation: 36? E. expected value (mean): -3variance: 6standard deviation: 36?
Write an equivalent fraction for the percent and, if possible, simplify.80%
A. 
B. 
C. 
D. 8