What is the area and the perimeter

An acre is an area that is a little smaller than a football field. Jeremy says that the size of the school playground is about 5/12 of an acre. Susan says that the playground is at least 1 6/12 acres bigger than Jeremy thinks it is.

62 kilograms decreased by 32%

Glenn wants to enlarge a photo. The original photo is 2 inch wide by 4 inches long. He wants to enlarged photo to be 5 inches wide by 10 inches long. Which scale factor should he use?

48/100 in simple form

6x minus 2y equals 24

Convert 30/20 into decimal

2 (m+1) = 16 me ajuda por favor

Classify each polynomial by its degree and number of terms. 7/4x+3 5.2x^2-4x=2.5 3/5 0.75x^2

Claire wants to place a mirror that is 1812 inches wide in the center of a wall that is 31 inches wide. How far from each corner should she place the mirror for it to be centered.

Three times the sum of a number and three