Solve by the substitution method.9x + 8y = 324x - 4y = 52

A. {(8, -5)}
B. ?
C. {(7, -4)}
D. {(8, -4)}


Answer: A

Mathematics

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B.  = 4
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A. 1254.75 m2 B. 76.4 m2 C. 1144.75 m2 D. 12,547.5 m2

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Divide and, if possible, simplify. Assume all variables represent positive real numbers.

A. 5x2y3
B. 125x2y3
C. 125x5y8
D. 5x2y3

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