Sound travels 750 miles per hour. If you stand in a canyon and sound a horn, you will hear an echo. How far is the canyon wall from you in feet?

Find the balance at the end of 4 years if 1000 is deposited at the rate of

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

Which equation is true? i. 56 ÷ 4·7 = 82 ÷ (11 + 5) ii. (24 ÷ 8 + 2)3 = (42 + 9)2 neither i nor ii ii only i and ii i only