Find the center of mass of a thin plate covering the given region with the given density function.The region between the curve y = 
and the x-axis from x = 1 to x = 9, with density ?(x) = 
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 5, 
= 
D. 
= 
, 
= 
Answer: A
Mathematics
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Solve the system, using Cramer's rule, if possible.2x + 8y + 6z = 204x + 2y - 2z = -23x - y + z = 11
A. {(2, 1, 6)} B. ? C. {(-1, 2, 1)} D. {(2, -1, 4)}
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Find the effective annual interest rate for the given nominal annual interest rate. Round your answers to the nearest 0.01%.3.7% compounded hourly (assume 365 days per year)
A. 103.77% B. 3.82% C. 3.77% D. 3.76%
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Graph the horizontal or vertical line.x = -5
A. 
B. 
C. 
D. 
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Find the product.
A. 
B. 
C. 
D. 
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