SOLUTION: if a rock falls from a height of 37 meter on earth, the height H (in meters) after x second is approx. H(x)=37-4.9x^2
1.the height of the rock is 12 meters when x= ? seconds
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Algebra.Com
Question 646010: if a rock falls from a height of 37 meter on earth, the height H (in meters) after x second is approx. H(x)=37-4.9x^2
1.the height of the rock is 12 meters when x= ? seconds
(round 2 decimal places
2.the rock strikes the ground when x=? seconds
(round two decimal places as needed)
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
1. 
2. 
Solve the two quadratics, discarding the negative root in each case.
John
My calculator said it, I believe it, that settles it
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