Simplify. Assume all variables represent nonnegative values.

A. x63
B.
C. x7
D. 3z

Answer: C

Mathematics

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

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Convert the units.321 g =  kg

A. 321,000 kg B. 0.321 kg C. 32,100 kg D. 0.0321 kg

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Perform the indicated operation(s). Where possible, reduce the answer to lowest terms. + 

A.
B. 0
C.
D.

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Solve the system.x - y - 5z = -3  y + 3z = 6x + y + z = 9

A. (2z + 3, -3z + 6, z) B. (0, 0, 9) C. (2z - 3, -3z - 6, z) D. No solution

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