Arectangular deck is 42 feet long and 28 feet wide. a gallon of paint covers 350 sq feet. how many gallons are needed to paint the entire deck?

The formula for the volume of a rectangular prism is v = lwh. a rectangular prism has a length of 2y 3 and width of 5y. the volume of the prism is 20y 10 + 70y 4 . what is the height of the prism? show your work.

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.