Solve the problem.A boy is flying a model airplane while standing on a straight line. The plane, at the end of a twenty-five foot wire, flies in circles around the boy. The directed distance of the plane from the straight line is found to be d = 25 cos 
where d is measured in feet and t is the time in seconds. If d > 0, the plane is in front of the boy; if d < 0, the plane is behind him. What is the amplitude? What is the period? Graph d over two periods beginning at t = 0. 
What will be an ideal response?
amplitude = 25, period = 8/3
d = 25 cos  |
Mathematics
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Make the following conversion involving the U.S. and metric systems.23 L = 
qts
A. 21.8 qt B. 24.4 qt C. 10.4 qt D. 27.6 qt
Mathematics
Solve the problem.A rectangular swimming pool has a parabolic drain plate at the bottom of the pool. The drain plate is shaped like the region between y = 
x2 and the line y = 
from x = -1 to x = 1. The pool is 10 ft by 20 ft and 8 ft deep. If the drain plate is designed to withstand a fluid force of 200 lb, how high can the pool be filled without exceeding this limitation?
A. 5 ft 1 in. B. 4 ft 11 in. C. 5 ft 6 in. D. 5 ft 9 in.
Mathematics
Evaluate the given binomial coefficient.
A. 42 B. 3 C. 60,480 D. 84
Mathematics
Evaluate the expression by hand.81/3
A. 48 B. 16 C. 2 D. 6
Mathematics