Solve the problem.Find the center of mass of the thin semicircular region of constant density 
bounded by the 
and the curve 
.
A. 
= 0, 
= 
B. 
= 0, 
= 
C. 
= 0, 
= 
D. 
= 0, 
= 
Answer: B
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Solve the problem. Round your answer to 2 decimal places when necessary.The overall U.S. death rate for 60 year-olds is approximately 12 deaths per 1000 people. Suppose that a life insurance company insures 2000 60-year-old people. The cost of the premium is $760 per year, and the death benefit is $55,000. What is the expected profit or loss for the insurance company?
A. $200,000 profit B. $1,320,000 loss C. $310,000 profit D. $181,760 profit
Provide an appropriate response.Perform the indicated operation and reduce to lowest terms: 
Fill in the blank(s) with the appropriate word(s).
Provide an appropriate response.Rewrite the expression (7 + 6a) + 4b by applying the associative property. If the associative property does not apply, state this.
A. 4b + (7 + 6a) B. 7 + (6a + 4b) C. (6a + 7) + 4b D. Associative property does not apply
If the expression is in exponential form, write it in radical form. If it is in radical form, write it in exponential form.x9/4
A. 
B. 
C. 
D. 