The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = 12 sin t - cos tFind the body's acceleration at time t = ?/4 sec.
A. - 
m/sec2
B. 
m/sec2
C. - 
m/sec2
D. 
m/sec2
Answer: A
Mathematics
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Solve the problem.The position (in centimeters) of an object oscillating up and down at the end of a spring is given by 
at time t (in seconds). The value of A is the amplitude of the motion, k is a measure of the stiffness of the spring, and m is the mass of the object. How fast is the object accelerating when it is accelerating the fastest?
A. A2 cm/sec2
B. A
cm/sec2
C. A cm/sec2
D. 
cm/sec2
Mathematics
Complete the table of values and use it to solve the equation numerically.4(x + 3) = 20 
A. 2 B. 1 C. 0 D. -2
Mathematics
Find the square.(3m + 1)2
A. 9m2 + 6m + 1 B. 3m2 + 6m + 1 C. 3m2 + 1 D. 9m2 + 1
Mathematics
Solve the equation.x(x2 + 2) = 8 + x3
A. 
B. 
C. {2}
D. {8}
Mathematics