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

Answer 1

PR = 2QR because Q is the midpoint of PR

9x-31 = 2(43)

9x=117

x=13

Answer 2

Remember that the midpoint is mid-way of half-way through the line segment. In this case, we set the the equation as follows:

9x-31 = 2 x 43 (now multiply two times forty-three = 86)

Second step: add 31 to both sides of the equation. -- Now 9x = 117.

Third step: Now, divide both sides of the equation by 9. This gives us the answer of 23.