Solve the problem.The position of a weight attached to a spring is s(t) = -8 cos 20?t inches after t seconds. What is the maximum height that the weight reaches above the equilibrium position and when does it first reach the maximum height?
A. The maximum height of 16 inches is first reached after 10 seconds.
B. The maximum height of 16 inches is first reached after 5 seconds.
C. The maximum height of 8 inches is first reached after 0.05 seconds.
D. The maximum height of 8 inches is first reached after 10 seconds.
Answer: C
You might also like to view...
Find an approximate value of x using a scientific calculator. If necessary, round to four decimal places.ln x = -0.35
A. 0.7047 B. 2.2387 C. 0.4467 D. 1.4191
A computer store has fixed costs of $7,250 per month and a unit cost of $700 for every computer it sells. If the store can sell all the computers it can get for $950 each, how many must be sold for the store to break even? (The break-even point occurs when costs equal income.) ?
A. 31 computers B. 43 computers C. 22 computers D. 29 computers E. 37 computers
Find the sum of the first five terms of the sequence with the following general term. ? 3k0 ?
A. 30 B. 45 C. 15 D. 11 E. none of these
Perform the indicated operation. Simplify the result, if possible.
- 
A. 
B. 
C. 
D. 