Simplify. Write the answer with positive exponents.(x-7y9z3)(x-2y-2z5)

A.
B.
C.
D. x5y7z8

Answer: B

Mathematics

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Simplify the complex fraction.

A.
B.
C.
D. 12x(x + 4)

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Change to an equivalent expression involving an exponent.logb r = s

A. rb = s B. br = s C. bs = r D. rs = b

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Solve using the elimination method. x -  y = 1x + y = 3

A.
B. (1, 3)
C.
D.

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Mathematics

Solve the problem.The following scatter diagram shows heights (in inches) of children and their ages.Height (inches) Age (years)Based on this data, how old do you think a child is who is about 39 inches tall?

A. 7 years B. 3 months C. 3 years D. 1 year

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Mathematics