SOLUTION: In Acapulco, Mexico, men diving from a cliff to the water 64 feet below are quite a tourist attraction. A diver's height h above the water t seconds after diving is given by h = -1

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: In Acapulco, Mexico, men diving from a cliff to the water 64 feet below are quite a tourist attraction. A diver's height h above the water t seconds after diving is given by h = -1      Log On


   



Question 320741: In Acapulco, Mexico, men diving from a cliff to the water 64 feet below are quite a tourist attraction. A diver's height h above the water t seconds after diving is given by h = -16t^2 + 64. How long does a dive last?

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Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
A diver's height h above the water t seconds after diving is given by
h = -16t^2 + 64. How long does a dive last?
:
Replace h with sea level, which is 0, solve for t
-16t^2 + 64 = 0
-16t^2 = -64
divide both sides by -16, this also changes the signs
t^2 = 4
t = sqrt%284%29
t = 2 seconds