What is the difference between joint and marginal frequency?

5x + 2y = 8 x + y = 4 If you want to solve the system of equations by addition, which of the following could you do?

48 round to the greatest place

Find from first principles the derivative of x squared plus 2x

If you flip a fair coin 3 times what are the chances you will get all heads

Christy solved this problem. A store charged a customer $445.50 for 150 floor tiles. What is the price of each tile? Christy thought the answer was $2.97. Is Christy's answer reasonable? A. Yes, Christy's answer is reasonable. B.

One out of 42 high school ball players plays college ball. One out of 25 college players plays professional ball. What fraction of high school players plays professional ball?

2. The numbers 1 through 50 are written with red marker on slips of paper while the numbers 51 through 100 are written with blue marker on slips of paper. All the papers are put into a bag and shuffled. One card is randomly selected.

12 out of 15 as a percent, a decimal and a fraction

Make sure it's fully reduced. 2 - x = 5/8

A book store is having a sale. The book Bart wants was originally priced at $14.99. The book is now $10.04. By what percentage was the price reduced?