Find the volume of the described solid.The base of a solid is the region between the curve y = 5cos x and the x-axis from x = 0 to x = ?/2. The cross sections perpendicular to the x-axis are squares with diagonals running from the x-axis to the curve.
A. 6?
B. 
?
C. 
?
D. 
?
Answer: B
Mathematics
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Use the graph to estimate any solutions to the given equation on the interval 
cos x = sin x cos x
A. None
B. 0, 
, ? , 
C. 
, 
D. 0, ?
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Collect like terms.-7z - (-3z)
A. -4z B. -4z2 C. -10z D. 4z
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