Which triangles are right​ triangles? Select all that apply. A.
Triangle 1
B.
Triangle 2
C.
Triangle 4
D.
Triangle 3

David and alton are training for a race. they spend 35 minutes stretching and then go on a 5 mile practice run. david runs at a pace of 7 min/mile. alton runs at a pace of 8 min/mile. write an equation for each runner that shows the total length of their workout. then solve each equation showing your work