Use the commutative property of multiplication to write an equivalent algebraic expression.6 ? x

A. 6x
B. x ? 6
C.
D. x + 6

Answer: B

Mathematics

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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 3-2? 34

A.
B. 6
C. -729
D. 9

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Find the amplitude, period, or phase shift as specified.Find the amplitude of y = -5 cos .

A. 3?
B. 5
C. -15
D.

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Determine whether matrix B is the inverse of matrix A by finding the product AB.A = , B = 

A. B = A-1 B. B ? A-1

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Simplify the expression using the product and quotient properties of square roots. Assume that any variables represent positive real numbers.-

A. -3
B. -4
C. -4
D. 4

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