Convert 5.7×108 to its expanded form. sorry guys im not good with math so i need halp ^_^

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

Consider the image of klmn for the translation (x, y) → (x – 2, y – 1). what is the ordered pair of l′?

Your friend, taylor, missed class today and needs some identifying solutions to systems. explain to taylor how to find the solution(s) of any system using its graph.