Provide an appropriate response.Solve the following using a system of equations: The sum of two numbers is 21. If the larger is 3 more than the smaller, find each number.
Fill in the blank(s) with the appropriate word(s).
12 and 9
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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. 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
Find the equation of the line tangent or normal (as indicated) to the given curve with the given slope.y = 
, x > -1, normal line with slope - 
A. y = -3x
B. y = - 
C. y = 
D. y = 3x
Solve the problem.Kimberly invested 
in her savings account for 8 years. When she withdrew it, she had 
. Interest was compounded continuously. What was the interest rate on the account? Round to the nearest tenth of a percent.
A. 3.9% B. 3.8% C. 3.95% D. 3.7%
Convert the radian measure to degrees. Round to the nearest hundredth if necessary.
A. 0.523°
B. 
°
C. 30?°
D. 30°