What is the definition of i? What do we use it for?

A right triangle has legs that measure 8 inches and 15 inches what is the lenght of the hypotenuse

A hotel charges $90 per night for a room. They charge an additional $8 for each person staying in the room. Each room has a maximum capacity of 5 occupants.

Jennifer jogged at a rate of 3/5 mile every 6 minutes. what was her jogging rate in miles per hour

A river cruise boat sailed 80 miles down the Mississippi River for 4 hours. It took 5 hours to return. Find the rate of the cruise boat in still water and the rate of the current.

245:62 and 23:8303 and 14:532 and 11*8-6:2

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?