Solve for y. 17)c=11+ 5hy

18)4x-7y= 24

19)7y=5x

20)a = by

PLS HELP

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

The base of a triangle is 8 1 3 meters and the height of the triangle is the fourth root of 16 meters meters. what is the area of the triangle?

Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts