Compare the subtraction problems (6 8
− 5
8
= 1
8
) and (6
9
− 7
9
= −1
9
). Why is the answer to the first
problem positive and the answer to the second problem negative? Check all that apply.

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

You have 17 cats that live in houses on your street, 24 dogs, 3 fish, and 4 hamsters. what percent of animals on your block are dogs?

Given right triangle abc, what is the value of tan(a)?