What time what equals 9

9. One number is 8 more than the other. Determine the two numbers if their sum is 74.

Barry Allen's older brother is only 3 years more than triple Barry's age. If the sum of their ages is 28, find their ages

When the sum of two negative mixed numbers an integer?

Richard can do a job in eight hours that Randy needs 13 hours to do. If Brandon works four hours before Richard joins him how long does it take the two of them to finish the work?

What does a markdown in math mean?

Patrick is doing a card trick using a standard 52-card deck with four suits: hearts, diamonds, spades, and clubs. He shows his friend a card, replaces it, and then shows his friend another card.

The temperature dropped 13 degrees in in 7 hours. the final temperature was - 2 degrees. what was the starting temperature?

What expression is equivalent to 18c^8 d^9/9c^3 d^6

How do I find the missing numbers in this problem - 7 * _ 8 r3

The height of a ball is modeled by f (x) = - 16x^2 + 128x, where x is the number of seconds after the ball is hit. How long is the ball in the air?