Callista needs a carpet runner for her hallway. She needs it to be 1 1/2 feet wide and 4 feet long. What is the area of the carpet runner Callista needs?

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?