An object attached to a coiled spring is pulled down a distance a from its rest position and then released. Assuming that the motion is simple harmonic with period T, write an equation that relates the displacement d of the object from its rest position after t seconds. Also assume that the positive direction of the motion is up.a = 5;
T = 3 seconds
A. d = -5 cos 
B. d = -5 sin 
C. d = -3 cos 
D. d = -5 cos 
Answer: A
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A. 
B. 
C. 
D. 
Use a graphing calculator and the method of matrix inverses to solve the system. Give 5 decimal places.x - 
y =3.72.85x + y = -8.23
A. {(0, 0)} B. {(2.61630, -2.88772)} C. {(-1.57817, -3.73223)} D. {(3.43297, 0.18882)}
Solve.During a five-year period, a company doubles its profits each year. If the profits at the end of the fifth year are $224,000, then what are the profits for each of the first four years?
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Solve the equation x³ -12x² +41x -30 graphically in the interval [- 1, 7].
(a) x = 1.00, x = 5.00, x = 3.50 (b) x = 1.00, x = 5.00, x = 6.00 (c) x = 0.50, x = 5.50, x = 3.50 (d) x = 1.00, x = 5.50, x = 6.00 (e) x = 0.50, x = 5.00, x = 6.00