Triangle pqr has vertices p(4,-1), q(-2,7), and r(9,9) find an equation of the median from r find an equation of the altitude from r are ur answers to a and b the same is the triangle isosceles
due tomorrow asap pls

Which of the fallowing best completes the sequence 5,10,15, a) 30 b) 22 c)25 d)35

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?

21 a stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one. how long are the two pieces?