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. 
= 2, 
= 0
B. 
= 5, 
= 0
C. 
= 4, 
= 0
D. 
= 3, 
= 0
Answer: D
Mathematics
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Find the area of the specified region.Shared by the circle r = 3 and the cardioid r = 3(1 + sin ?)
A. 
(5? - 8)
B. 
(5? + 8)
C. 0
D. 9
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Find the ending balance in the account register.
A. $488.19 B. $972.26 C. $1511.31 D. $766.35
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Find the product.(9x + 11)(5x + 4)
A. 45x2 + 91x + 44 B. 14x2 + 91x + 91 C. 45x2 + 91x + 91 D. 14x2 + 91x + 44
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Evaluate each expression following the order of operations.-3(25 - 3 ? 52) ÷ 5
A. 30 B. 45 C. -15 D. 60
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