Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at x = -6 and x = 6. The cross sections perpendicular to the x-axis between these planes are squares whose diagonals run from the semicircle y = - 
to the semicircle y = 
.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the center of mass of a thin plate of constant density covering the given region.The region bounded by y = x2 and y = 9
A. 
= 0, 
= 
B. 
= 0, 
= 15
C. 
= 0, 
= 
D. 
= 0, 
= 
Mathematics
Divide using distribution.
A. 8x4 + 4x - 9x2
B. 4x4 + 2x3 - 
C. 8x2 + 4x - 9
D. 8x4 + 4x3 - 9
Mathematics
Graph the function.y = -3 cot (2x)
A. 
B. 
C. 
D. 
Mathematics
The graph of a function f is given. On the same axes, sketch the graph of f-1. 
A. 
B. 
Mathematics