Solve the system by substitution.x = 3y + 7y = x - 5

A. (-4, -1)
B. (-4, 1)
C. (4, -1)
D. (4, 1)


Answer: C

Mathematics

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A formula is given, along with values for all but one of the variables in the formula. Find the value of the variable that is not given.V = Bh for B = 27, h = 4

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A.

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