Rewrite the following using radicals; then simplify if possible.
1/2
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: A
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Solve the problem.A 15-kg mass is attached to a spring that hangs vertically and is stretched 2 m from the equilibrium position of the spring. Assume a linear spring with F(x) = kx. How much work is required to stretch the spring and lower the mass 1.5 m? Round to four decimal places when appropriate.
A. 248.0625 J B. 303.1875 J C. 523.6875 J D. 27.5625 J
Add or subtract. Simplify your answer to lowest terms.
+ 
A. 
B. 
C. 
D. 
Let f be the function defined by 
. Find 
, 
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, 
, and 
.
What will be an ideal response?
Find the exact value of the expression if ? = 45°. Do not use a calculator.f(?) = sin ?Find 5 f(?).
A. - 
B. 
C. 
D. - 