Solve the problem.Find the centroid of the infinite region in the first quadrant bounded by the coordinate axes and the curve 
.
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Answer: B
Mathematics
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Factor out the largest possible common factor.72x9y9 - 80x5y5 - 48x2y3
A. 8(9x9y9 - 10x5y5 - 6x2y3) B. 8x2y3(9x7y6 - 10x3y2 - 6) C. 8x2(9x7y9 - 10x3y5 - 6y3) D. -8x2y3(-9x7y6 - 10x3y2 + 6)
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Apply the Rule of Negative Exponents and evaluate.21-1
A. 21
B. 
C. - 
D. -21
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Simplify the expression.
3/2
A. - 
B. 
C. - 
D. 
Mathematics
Find the exact value of the expression. Do not use a calculator.cos 35°sin 55° + sin 35°cos 55°
A. 0 B. 2 C. -1 D. 1
Mathematics