Find the center of mass of a thin plate covering the given region with the given density function.The region enclosed by the parabolas y = 8 - x2 and y = x2, with density ?(x) = x2
A. 
= 4, 
= 0
B. 
= 0, 
= 
C. 
= 0, 
= 4
D. 
= 0, 
= 8
Answer: C
Mathematics
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Simplify.(9x8y4)2
A. 9x16y8 B. 81x16y8 C. 9x10y6 D. 18x8y4
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Solve.An inflatable circular pool has a radius of 4
ft. Approximate the distance around the pool. Use 
for ?.
A. 56
ft
B. 13
ft
C. 26
ft
D. 6
ft
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Solve the equation by completing the square.x2 + x + 3 = 0
A. 
, 
B. 
, 
C. 
, 
D. 
, 
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Use the Gauss-Jordan method to solve the system of equations. x - y + 2z = 92x + z = 4 x + 4y + z = 0
A. (0, -1, 4) B. No solution C. (4, -1, 0) D. (4, 0, -1)
Mathematics