Solve the given applied problem.A projectile moves vertically upward such that its distance s (in ft) above the ground is given by 
Determine when the projectile will hit the ground (to 0.1 s).
A. 16 s
B. 2153.1 s
C. 16.7 s
D. 16.4 s
Answer: D
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Solve the problem.Find the center of mass of the upper half of a solid ball of radius 1 centered at the origin if the density at any point is proportional to the distance from that point to the 
A. (
, 
, 
) = 
B. (
, 
, 
) = 
C. (
, 
, 
) = 
D. (
, 
, 
) = 
Solve.12 - 
= 5
A. -24, 10 B. -14, 0 C. 0, 14 D. -10, 24
Use the given matrices to compute the given expression.Let A = 
and B = 
. Find 3A - 3B.
A. 
B. 
C. 
D. 
Solve the problem by using a system of equations.South Wind Vineyards uses 830 acres to plant Chardonnay and Riesling grapes. The vintner knows the profits will be greatest by planting 180 more acres of Chardonnay than Riesling. How many acres of each grape should be planted?
A. Riesling: 325 acres; Chardonnay: 505 acres B. Riesling: 408 acres; Chardonnay: 422 acres C. Riesling: 242 acres; Chardonnay: 588 acres D. Riesling: 505 acres; Chardonnay: 325 acres