the average height of elementary school children is 42 inches with a standard deviation of 4.32 random sample of 30 children from this school, find the probability that their mean height is greater than 40 inches.

Which of the following situations represents a linear relationship? a. theresa increases the distance she runs by 0.1 miles every week. b. the volume of a box depends on the length of box. c. the amount of money in a bank account increases by 1 percent each year. d. the population of a town doubles every 5 years.

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd