Provide an appropriate response.Find -x

A. e
B. ?
C.
D. - 

Answer: C

Mathematics

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Add or subtract. Simplify your answer to lowest terms. - 

A. r + 9
B. r - 81
C.
D. r - 9

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Find the inverse of the matrix (if it exists).

A. ?
B. ?
C. ?
D. ?
E. does not exist

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Solve.Divide:  

A. 2n
B. 20n
C. 2
D. 20

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Evaluate the sum.

A.
B.
C.
D.

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