Mrs harrison borrows 600

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

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?

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16