SOLUTION: Please help me answer this question A small rock sits on the edge of a tall building. A strong wind blows the rock off the edge. The distance in feet between the rock and the grou

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Please help me answer this question A small rock sits on the edge of a tall building. A strong wind blows the rock off the edge. The distance in feet between the rock and the grou      Log On


   

Question 807987: Please help me answer this question
A small rock sits on the edge of a tall building. A strong wind blows the rock off the edge. The distance in feet between the rock and the ground t seconds after the rock leaves the edge is given by d=-16t^2-8t+500.
If the answer is not an integer enter it as a decimal. round to the nearest hundredth, if needed.
how many seconds after the rock leaves the edge is it 464 feet from the ground?
------------seconds
How many seconds after the rock leaves the edge does it hit the ground?
------------- seconds
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
d=-16t^2-8t+500
464=-16t^2-8t+500
t = 1.2707
0=-16t^2-8t+500
t = 5.8458