Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 9cos ?x, y = 0, x = -0.5, x = 0.5
A. 
?
B. 162?
C. 27?
D. 81?
Answer: A
Mathematics
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Solve the problem.A man rode a bicycle for 12 miles and then hiked an additional 8 miles. The total time for the trip was 
If his rate when he was riding a bicycle was 10 miles per hour faster than his rate walking, what was each rate?
A. Bike: 12 mph Hike: 2 mph B. Bike: 14.5 mph Hike: 4.5 mph C. Bike: 13 mph Hike: 3 mph D. Bike: 11.5 mph Hike: 1.5 mph
Mathematics
Determine the real solutions to the system of nonlinear equations.x2 - 2y2 = 23x2 + 2y2 = 14
A. (2, 1), (-2, -1) B. (1, 2), (-1, 2), (1, -2), (-1, -2) C. (-1, 2), (1, -2) D. (2, 1), (2, -1), (-2, 1), (-2, -1)
Mathematics
Solve the equation.
n = 9
A. 4
B. 
C. 
D. 18
Mathematics
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.
A. b
B. 
C. 
D. 6
Mathematics