Use the shell method to find the volume of the solid generated by revolving the shaded region about the indicated axis.About the y-axis  

A. 16?
B. 20?
C. 12?
D. 8?

Answer: A

Mathematics

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Simplify the expression. Assume that all variables are positive when they appear. - 

A. 2 - 3
B. 5
C. 3 - 2
D. 2 - 3

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Subtract.

A. 99 B. 23 C. 21 D. 83

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Factor the polynomial completely using the trial and error method.18x3y + 42x2y + 24xy

A. 2y(3x + 1)(3x + 12) B. 2xy(3x + 3)(3x + 4) C. 2xy(12x + 3)(x + 4) D. 2xy(3x + 1)(3x + 12)

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Select the correct graph of the inequality. ? ?

A. ?
B. ?
C. ?
D. ?
E. ?

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