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

asked Dec 20, 2023 125k views

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7 votes

Answer: 49

Explanation:

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

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

EbraHim answered Dec 24, 2023

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