Y=x+2

x+y=20

simultaneous equations

1. A sample of n = 9 scores has ex = 108. What is the sample mean?

Paul and his friends average their test grades and find that the average is 95. The teacher announces that the average grade of all her classes is 83. Why are the averages so different

A cylindrical container of six rubber balls has a height of 24 centimeters and a diameter of 4 centimeters. Each ball in the container has a radius of 2 centimeters. Find the amount of space in the container that is not occupied by rubber balls.

What is 1 2/12 + 1/6 + 7 3/4

What's k^2 - n^2 = 2b as a sentence?

Anna tossed 3 coins in the air. What is the probability that exactly 2 of the coins show heads? Look back at all of the possible outcomes from #2 and use that to find your probability. Write the probability as a fraction. Simplify, if needed.

A gold and diamond bracelet sells for $1800. Find the sales tax and total price if the sales tax rate is 3.5%.

A squirrel found 48 acorns in a 3-day period. Each day the squirrel found 5 more acorns than the day before. How many acorns did the squirrel find on the first day?

After work Gladys used the ATM to deposit her paycheck for $638.77 and to withdraw $200 cash. If her starting bank balance was $418.03 what is her new balance

Anita read 24 pages of her book in 12 minutes how long will it take her to read 34 pages