On average, people can hold their
breath for one minute. the world
record is seven and a half minutes.
express the record time
in seconds.

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the