The expression that represents the length of QR is 4x - 6
Which expression represents the length of QR?
From the question, we have the following parameters that can be used in our computation:
The triangle
Where, we have
Perimeter = 8x - 6
Side lengths other than QR = x + 1 and 3x - 1
The perimeter is the sum of the side lengths
So, we gave
QR + x + 1 + 3x - 1 = 8x - 6
Evaluate
QR + 4x= 8x - 6
So, we have
QR = 4x - 6
hence, the expression that represents the length of QR is 4x - 6