How much acid should be mixed with 3 gallons of a 40% acid solution in order to get a 90% solution?

Find the area of a parallelogram with base 15 yards and height 21 2/3

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

Opposite angles in a parrellelogram are