Question

What is the measure of QR?

Answer 1

QR = 15

Explanation:

If PQRS is parallelogram, then SP = RQ. Therefore we have the equation:

5z + 3 = 6z - 3 subtract 3 from both sides

5z = 6z - 3 subtract 6z from both sides

-z = - 3 change the signs

z = 3

QR = 6z - 3

Put the value of z to the expression:

QR = 6(3) - 3 = 18 - 3 = 15