please answer asap no trolls!!!

Answer:
z = 66
Step-by-step explanation:
QT is the midline of triangle RSU.
Using the property of the midline in a triangle, you have:
RS = 2 x QT
or
z = 2 (z - 33)
Expand the right side, you have:
z = 2z - 66
or
2z - z = 66
or
z = 66