Mary can paint a house by herself in 12 hours. john can paint a house by himself in 16 hours. how long would it take them to paint the house if they worked together?

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?

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)