Mary making a solution for a science class experiment. The solution must be 20% water. If there will be 10 ounces of water, what is the total amount of solution needed for the experiment?

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?