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Posted by **sabrina** on Monday, July 11, 2011 at 5:02pm.

h = −16t2 + 250t.

How many seconds after launch will the rocket be 730 ft above the ground? Round to the nearest hundredth of a second.

- math -
**Reiny**, Monday, July 11, 2011 at 6:06pmsolve

730 = -16t^2 + 250t

16t^2 - 250t + 730 = 0

(use the quadratic equation formula)

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