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R is the midpoint of QS. If QR = 7x and QS = 15x − 7, what is QR?
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R is the midpoint of QS. If QR = 7x and QS = 15x − 7, what is QR?

User EngineerDave
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1 Answer

7 votes

Answer: 49

Explanation:

If R is the midpoint of QS, QS=2(QR)=2(RS).


15x-7=2(7x)\\15x-7=14x\\-7=-x\\\\x=7\\\\QR=7(7)=\boxed{49}

User EbraHim
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