25-09-2020
Mathematics

contestada

Suppose Q is the midpoint of PR. PR = 9x - 31 and QR = 43. Find X

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tomson1975 tomson1975

25-09-2020

Greetings from Brasil...

Since Q is the central point of PR, then PQ = QR and PQ = PR/2 or QR = PR/2

QR = PR/2

PR = 2 · QR

9X - 31 = 2 · 43

X = 13

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