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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 =

Hundred and tens tables to make 430 in five different ways

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6