Express the formula P=21 +2W in terms of the length, l. Use the new formula to find the new length when the perimeter is 68 and the width is 13.

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

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?

Ithink i know it but i want to be sure so can you me out ?