Find the center of mass of a thin plate of constant density covering the given region.The region bounded by the x-axis and the curve y = 5sin x, 0 ? x ? ?
A. 
= ?, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Answer: D
Mathematics
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Simplify the radical. Assume that all variables represent positive real numbers.
A. 80
B. 4 + 
C. 4
D. 
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A. 18k2 B. 18 C. 4k D. 4k2
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Simplify the expression.32-4/5
A. 
B. 16
C. - 
D. not a real number
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