help me plzzzzzzzzzzz

- remember that the midline is always half of the sum of the other two legs.
here,
UX is the midline,
ST is the leg,
VW is the other leg.
so,
ST + VW = 2UX
now plug in,
25 + VW = 2(35)
25 + VW = 70
VW = 45
request: please mark brainiest, and click the thanks button if correct <3