What is : 3 decreased by 60 ?

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

What does x = in this equation x+3+2x=x+5

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 =