Find the integral using the indicated substitution.
Select the correct answer.
a. 
Mathematics
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Use spherical coordinates to find the volume of the indicated region.the region enclosed by the cone 
between the planes 
and 
A. 
?
B. 
C. 
D. 
?
Mathematics
Solve the problem.An airplane flies 420 miles with the wind and 320 against the wind in the same length of time. If the speed of the wind is 40 mph, what is the speed of the airplane in still air?
A. 296 mph B. 286 mph C. 128 mph D. 301 mph
Mathematics
Write an equivalent expression in exponential form.log2 32 = 5
A. 325 = 2 B. 52 = 32 C. 25 = 32 D. 232 = 5
Mathematics
Solve the logarithmic equation symbolically.log (9 - x) = 0.6
A. x = 10-8.4 B. x = -100.6/9 C. x = 5.01892829 D. x = -109.6
Mathematics