“El cuádruplo de un número aumentado en dos es igual a 30”. La ecuación que plantea la solución de este problema es:

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

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 =

Find the y-intercept and x-intercept for the equation 5x-3y=60 what is the y-intercept