The mean score of a college entrance test is 80; the standard deviation is 15. the scores are normally distributed. what percent of the students scored below 50?

Billy is thinking of three numbers from 1 through 9 with a sum of 17. each number is used only once. What are the numbers?

Which decimal is equal to 1/6 0.6 0.15 0.3 0.3 0.4

294 blue balls, 252 pink balls and 210 yellow balls are distributed equally among some students with none left over. What is the biggest possible number of students?

5.25 divided by 25 hi

What interest rate is needed for $9,500 to earn $900 in 19 months?

In a sale, Richard bought a TV for £300. The original price of the TV was £380. What was the percentage discount on the TV?

What is the simplest form of √3025 16 55 5^2 (11^2) 5^2 + (11^2)

Rhonda filled her aquarium with water. Then, she took out 3 gallons to make room for the gravel and fish. She added 2 quarts back in. Then, she added 4 fish. Each fish was in a separate bag with 1 pint of water.

Which pair of ratios can from a true proportion A. 7/4,21/12 B. 6/3, 5/6 C. 7/10, 6/7 D. 3/5, 7/12

Brett fills up his car at a gas station selling gas for $2.10 per gallon. It takes 6 1/2 gallons of gas to fill up the car. How much does Brett spend on gas?