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 = 18 - x2 and y = x2, with density ?(x) = x2
A. 
= 0, 
= 
B. 
= 0, 
= 9
C. 
= 9, 
= 0
D. 
= 0, 
= 18
Answer: B
Mathematics
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Find the exact circular function value.tan 
A. 
B. 
C. 1
D. 
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Which of the following is NOT characteristic of a student who functions at the first van Hiele level?
a. Being able to name a square when it is shown to him or her b. Carefully comparing sides and angles of shapes to one another c. Believing that squares and rectangles are completely different shapes d. Thinking that changing the orientation of a square makes it a different shape
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Solve.Find the sum of the first 116 natural numbers.
A. 13,572 B. 13,456 C. 6786 D. 6670
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Graph the system of inequalities. Shade the region that represents the points of intersection.
A. 
B. 
C. 
D. 
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