Use symmetry to help evaluate the integral.
A. 12
B. 13
C. 
D. 
Answer: A
Mathematics
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Write the percent as a decimal.3.1%
A. 0.031 B. 31.0 C. 0.31 D. 3.1
Mathematics
Find: a. The center and radius of the circle. b. The x- and y-intercepts of the graph of the circle.x2 + y2 + 6 = 0
A. a. center = (0, 0); radius = 6
b. (-
, 0), (
, 0), (0, 
), (0, -
)
B. a. center = (0, 0); radius = 
b. (
, 0), (0, 
)
C. a. center = (0, 0); radius = 
b. (-
, 0), (
, 0), (0, 
), (0, -
)
D. a. ?
b. ?
Mathematics
Solve.y' = 2x - xy; y = 4 when x = 0
A. y = -2e-x2/2 + 6 B. y = 4e-x2/2 C. y = 6e-x2/2 + 4 D. y = 2e-x2/2 + 2
Mathematics
Solve the problem.The annual rainfall in Maine is a random variable with probability density function defined by 
for x in 
Find the probability that the rainfall is greater than the mean.
A. 0.549 B. 0.512 C. 0.500 D. 0.553
Mathematics