The ratio of purple squares to green squares on a game bored is 3:5 how many green apiaries are there if there are 21 purple squares

What is the product of the radical expression. (7-2square root) (8+2 square root)

In factoring by grouping, what would you have for step 3 for the following? step 1: x^3 +5x^2 +4x+20 step 2: x^2 (x+5)+4(x+5) step 3: ?

Arectangle has a width of 9 units and length of 40 units. what is the length of a diognal. a. 31 unitsb. 39 unitsc. 41 units d. 49 units