Alexander and lan can each wash a car and vacuum its interior in 2 hours. Anjo needs 3 hours to do the same job by himself. If Anjo, Alexander, and lan work together, how long
will it take them to clean a car?

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?

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

20 ! jason orders a data set from least to greatest. complete the sentence by selecting the correct word from each drop-down menu. the middle value of the data set is a measure and is called the part a: center b: spread part b: mean a: mean absolute deviation b: median c: range