Brainlist . answer with an actual good answer or i will report

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 linear function that is represented by the equation y= 4x+5

Given: m zade = 60° and m2cdf = (3x + 15) prove: x = 15