If a/b and c/d are rational expressions, then what is a/b•c/d = a/b•c/b

Abcd is a parallelogram find the valuse of x

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

The art class is planning to paint a mural on an outside wall. this figure is a scale drawing of the wall. width: 11 in length: 28 in unit rate: 1.5 ft per in. write the ratio of the area of the drawing to the area of the actual mural. write your answer as a unit rate. show that this unit rate is equal to the square of the unit rate 1.5 ft per in