Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 7csc x, y = 7
, 
? x ? 
A. ?2 + 14?
B. 7?2 - 49?
C. 49?2 - 98?
D. 49?2 + 98?
Answer: C
Mathematics
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Find the required quantity given the wire that lies along the curve r and has density ?.Moment of inertia Ix about the x-axis, where r(t) = 
t3/2i + (7t cos t)j + (7t sin t)k, 
A. Ix = 0
B. Ix = 98
C. Ix = 49
D. Ix = 
Mathematics
Collect like terms.-11x2 - 9x - 2x
A. -11x2 + 7x B. -11x2 - 11x C. -11x2 - 7x D. -22x3
Mathematics
Use the quadratic formula to find the exact solutions.x2 + 10x = -21
A. -7, 3 B. -3, -7 C. 3, 7 D. -3, 7
Mathematics
Solve the problem.A cubic salt crystal expands by accumulation on all sides. As it expands outward find the rate of change of its volume with respect to the length of an edge when the edge is 
A. 0.24 mm3/mm B. 5.55 mm3/mm C. 55.47 mm3/mm D. 0.5547 mm3/mm
Mathematics