A 20​-foot piece of siding is cut into three pieces so that the second piece is 4 times as long as the first piece and the third piece is five times as long as the first piece. If x represents the length of the first​ piece, find the lengths of all three pieces.

Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.