Find the sum of 1/5 and 2/3, then divide by 4

3x + 4y = 5 x- 3y = -7 solve by substitution

What is the scale factor of two similar pyramids with volumes of 64 cubic feet and 8 cubic feet

This size running track is usually called a 400 meter track. however if a person ran as close to the inside as possible on the track they would run less than 400 meters in one lap. how far away from the inside border would someone have to run to make one lap equal exactly 400 meters