Solve the problem.The position of an object moving in a straight line is given by s = 2t2 - 3t, where s is in meters and t is the time in seconds the object has been in motion. How long (to the nearest tenth) will it take the object to move 20 meters?
A. 3.8 sec
B. 21.0 sec
C. 4.0 sec
D. 74.0 sec
Answer: C
Mathematics
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Use the Comparison Test to determine if the series converges or diverges.
A. converges B. diverges
Mathematics
Solve the problem.Find the center of mass of the region of density 
bounded by the paraboloid 
and the xy-plane.
A. 
= 0, 
= 0, 
= 4
B. 
= 0, 
= 0, 
= 
C. 
= 0, 
= 0, 
= 8
D. 
= 0, 
= 0, 
= 
Mathematics
Perform the indicated operation.u = 9i + j, v = -6i - 8j, w = i - 6j; Find v - (u - w).
A. -16i - 3j B. 4i - 13j C. -14i - 15j D. -14i + 15j
Mathematics
Find the perimeter.
A. 87 m B. 105 m C. 64 m D. 128 m
Mathematics