Simplify the expression. Use positive exponents. Assume variables represent nonnegative numbers.

A. 5xy
B. 5x7y8 
C. 5x5y7
D. 5x2y3 

Answer: D

Mathematics

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Solve the problem.Find the volume of the solid that is generated by revolving the area bounded by    and  about the x-axis.

A. ? ln (2)
B. ? ln (2)
C. ? ln (11)
D. ? ln (11)

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Mathematics

Multiply.-6x4y2(9xy4 - 4x3y2 - xy + 2)

A. -54x5y6 + 4x7y4 - x5y3 + 2 B. -54x5y6 + 24x3y2 + 6xy - 12 C. -54x5y6 - 24x7y4 - 6x5y3 + 12x4y2 D. -54x5y6 + 24x7y4 + 6x5y3 - 12x4y2

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Mathematics

Solve by using the square root property.(x - 7)2 = 16

A. x = 3, x = -11 B. x = 11, x = 3 C. x = 23 D. x = 4, x = -4

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Mathematics

Divide.

A. 346 R 22 B. 22 C. 346 D. 346 R 14

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Mathematics