Add and simplify. + 

A.
B.
C.
D.

Answer: D

Mathematics

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Rationalize the denominator. Then simplify your answer. ? ? ?

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

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Combine like terms.-(-7m) + 9 + (-4n)

A. 11mn + 9 B. 7m + 4n + 3 C. 3mn + 9 D. 7m + (-4n) + 9

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Provide an appropriate response.Perform the indicated operations: 5 -  + 7 × 

A. 105 B. 177 C. -213 D. -45

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Determine if the given set of whole numbers is closed under addition.{0}

A. Not closed B. Closed

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