Simplify the algebraic expression.9(10x - 5y) - (6x - 3y)

A. -84x + 42y
B. 84x - 48y
C. 84x - 42y
D. 96x - 42y

Answer: C

Mathematics

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Evaluate the integral using the given substitution., u = cot 7?

A. -  cot2 7? + C
B.  csc3 7? cot2 7? + C
C.  cot2 ? + C
D. -  tan2 7? + C

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Mathematics

Solve the equation for y.4x + y = 16

A. y = 4 - x
B. y = 4x + 16
C. y = 16 - 4x
D. y = 

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Mathematics

Provide an appropriate response.The diagonals of a  intersect at their common midpoint.

A. trapezoid B. pentagon C. parallelogram D. rhombus

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Mathematics

Find the measures of two angles, one positive and one negative, that are coterminal with the given angle.

A. , - 
B. , - 
C. , - 
D. , - 

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Mathematics