Mathematics
laveault
2016-04-17 11:04:21
The quadratic model f(x) = –5x2 + 200 represents the approximate height, in meters, of a ball x seconds after being dropped. The ball is 50 meters from the ground after about how many seconds? 2.45 3.16 5.48 7.07
ANSWERS
Emy13
2016-04-17 16:56:23

50=-5x^2+200 5x^2-150=0  then you factor... 5(x^2-30)=0 5(x+√30)(x-√30) Since x>0 x=+√30 x≈5.48 seconds.

kristensanchez
2016-04-17 16:57:38

5.48 is the answer for full steps on how to solve visit Math way for all your math equations  Happy learning!! :-)

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