90-4x=80-3.5x what’s the value of x (hint: it’s not 1 1/3 or -1 1/3)

Zack and tia played chess for 50 min they put the chessboard away at 11: 20 when did they start

Afarmer has 5 times as many cows as pigs. the farmer only has cows and pigs, and he has 168 animals. how many cows does he have?

An observer(o) spots a plane(p) taking off from a local airport and flying at a 29 degree angle horizontal to her line of sight and located directly above a tower(t). the observer also notices a bird circling directly above her. if the distance from the plane(p) to the tower(t) is 6,000ft., how far is the bird(b) from the plane(p).