Solve the problem.If a rock falls from a height of 90 meters on Earth, the height H (in meters) after x seconds is approximately H(x) = 90 - 4.9x2.When does the rock strike the ground? Round to the nearest hundredth, if necessary.
A. 18.37 sec
B. 4.29 sec
C. 1.94 sec
D. 3.75 sec
Answer: B
Mathematics
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|-9|
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A. - 
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Mathematics