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OpenStudy (anonymous):
If a rock falls from a height of 49 meter on earth, the height H(in meters) after x seconds is approximately H(x)=49-4.9x^2.? When is the height of the rock 7 meters, x =approx how many seconds ? (round the two decimal places as needed)
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OpenStudy (tylerd):
what is the height of the rock 7 meters? you mean in 7 seconds?
OpenStudy (tylerd):
oh when is the height of the rock 7 meters
OpenStudy (tylerd):
ok
OpenStudy (tylerd):
7=-4.9x^2+49 solve for x
OpenStudy (tylerd):
|dw:1409457610372:dw|
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