Solve the problem.Find the center of mass of the region of constant density bounded by the paraboloid 
and the xy-plane.
A. 
= 0, 
= 0, 
= 4
B. 
= 0, 
= 0, 
= 
C. 
= 0, 
= 0, 
= 32
D. 
= 0, 
= 0, 
= 
Answer: D
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Solve the problem. Assume projectile is ideal, launch angle is measured from the horizontal, and launch is over a horizontal surface, unless stated otherwise.A projectile is fired at a speed of 680 m/sec at an angle of 51°. How long will it take to get 17 km downrange? Round answer to the nearest second.
A. 40 sec B. It will never get that far downrange. C. 38 sec D. 42 sec
Combine like terms.-9y - 2x - 7x
A. -9y - 9x B. -9y + 5x C. -18xy D. -9y - 5x
Determine whether or not the function is one-to-one.
A. Yes B. No
Write the equation of the circle in standard form. Find the center and radius. Then sketch the graph.x2 + y2 - 12x + 32 = 0
A. (x + 6)2 + y2 = 4
(h, k) = (-6, 0), r = 2
B. (x - 6)2 + y2 = 4
(h, k) = (6, 0), r = 2
C. x2 + (y - 6)2 = 4
(h, k) = (0, 6), r = 2
D. x2 + (y + 6)2 = 4
(h, k) = (0, -6), r = 2