Solve the problem.The power P (in W) generated by a particular windmill is given by 
where V is the velocity of the wind (in mph). Find the instantaneous rate of change of power with respect to velocity when the velocity is 
A. 97.3 W/mph
B. 21.9 W/mph
C. 9.9 W/mph
D. 0.7 W/mph
Answer: C
Mathematics
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cos-1 x
A. ? B. 1 C. 0 D. -1
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Find the limit.
A. 
B. -8
C. 1
D. 
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Use logarithmic differentiation to find the derivative of y with respect to the independent variable.y = x10 sin x
A. x sin x
B. 10 sin x ln x
C. 10 x10 sin x
D. 10 cos x ln x + 
Mathematics
Use the distributive property to rewrite the algebraic expression without parentheses. Then simplify the result, if possible.6x - 2(5y - 9)
A. 6x - 10y - 9 B. 6x - 10y - 18 C. 6x - 10y + 18 D. 6x - 10y + 9
Mathematics