List all subsets or determine the number of subsets as requested.Determine the number of subsets of {0}

A. 2
B. 0
C. 1
D. 4

Answer: A

Mathematics

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A. ; 
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A. -24 B. -36 C. 28 D. 8

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Solve the system of equations.  x + y + z = -9  x - y + 4z = -9 2x + 2y + 2z = -13

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Simplify the complex fraction.

A.
B.
C.
D. 8 - a2

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