Solve the problem.If an object is propelled upward with an initial velocity of 56 feet per second, then its height in feet after t seconds is given by h = 56t - 16t2. After how many seconds will the object reach its maximum height? Round your answer to the nearest tenth.
A. 0.9 seconds
B. 0.6 seconds
C. 1.8 seconds
D. 1.4 seconds
Answer: C
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Determine whether the given function satisfies Laplace's equation.f(x, y) = cos (x) sin (-y)
A. Yes B. No
The Acme Class Ring Company designs and sells two types of rings: the VIP and the SST. They can produce up to 24 rings each day using up to 60 total man-hours of labor. It takes 3 man-hours to make one VIP ring, versus 2 man-hours to make one SST ring.How many of each type of ring should be made daily to maximize the company's profit, if the profit on a VIP ring is $40 and on an SST ring is $35?
A. 16 VIP and 8 SST B. 12 VIP and 12 SST C. 14 VIP and 10 SST D. 18 VIP and 6 SST
Use the properties of determinants to find the value of the second determinant, given the value of the first.
= 119
= ?
A. -119 B. 0 C. 119 D. Cannot determine
Simplify the expression. If any variables are present, assume that they are positive.
? 
A. 10
B. 5
C. 5
D. 10