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. Find the object's acceleration at time t.
A. a = - A
sin 
cm/sec2
B. a = - A sin 
cm/sec2
C. a = 
cos 
cm/sec2
D. a = - 
sin 
cm/sec2
Answer: D
Mathematics
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Find the limit.
(-4x18 + 15)
A. ? B. -? C. 0 D. 15
Mathematics
Simplify the rate and write the result in words.
A. 
; 36 tubs of ice cream for every 19 people
B. 
; 9 people for every 19 tubs of ice cream
C. 
; 9 tubs of ice cream for every 76 people
D. 
; 9 tubs of ice cream for every 19 people
Mathematics
Find the value of the variable that satisfies the equation.
+ 3 = 12
A. x = 15 B. x = 92 C. x = 90 D. x = 54
Mathematics
Identify the equation as either an identity or not.sin (A + B) sin (A - B) = sin2A - sin2B
A. Not an identity B. Identity
Mathematics