A battery manufacturer wants to test their batteries. They put a battery in a torch, switch on the torch, and see how long the battery lasts.
Explain why testing a 10% sample of their batteries would not be suitable.

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi