In DEF, if d=e, de=x+4, ef=4x-8, df=7x-35, find x and the measure of each side

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

What is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.

Jonah runs 3/5 miles on sunday and 7/10 mile on monday. he uses the model to find that he can ran a total of 1 mile . what mistake does jonah make