Divide. Simplify.

-6 3/4 divided by 3 1/4

Uri asked six friends how many different foreign countries they'd been to. He recorded 0, 1, 1, 2, 5, and 9 countries visited. What is the mean absolute deviation of the number of countries visited? Round to the nearest tenth, if needed.

Solve for x. 3x-7=20

A Polynomial of degree 0

What is the reason for the fourth statement in this proof?

The time it takes a spinner to stop completely is 12 seconds. If the spinner completes 6 revolutions in this time, what was the average angular velocity of the spinner, in radians per second, for the 12-second interval?

A coach on a basketball team ordered jerseys for each player. Each one cost $12.95. The shipping charge for the entire order was a one-time fee of $20. The coach spent under $125 for the shirts and the fee.

A type of ribbon costs $0.32 per yard. How much do 4.5 yards of the ribbon cost?

Between which two square roots of integers could you find π?

A fraction with a zero in the numerator equals

Trella Alcala deposited 1950.00 in a new credit union savings account on the first of the quarter. The principal earns 4.25 percent interest compounded quarterly. What was the amount in her account at the end of the 6 months?