Find the center of mass of a thin plate covering the given region with the given density function.The region bounded by the curves y = ±  and the lines x = 1 and x = 9, with density ?(x) = 

A.  = 4,  = 0
B.  = 2,  = 0
C.  = 5,  = 0
D.  = 3,  = 0


Answer: D

Mathematics

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A.
B.
C.
D.

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Factor completely using the grouping method to factor trinomials. If unfactorable, indicate that the polynomial is prime.20y2 + 31y + 12

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Mathematics