It would mean alot if someone could help me!!
in Algebra 1 Answers by Level 1 User (360 points)

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1 Answer

We need to know t when h>50, so -4.9t²+38t+1.75>50.

This can be written: 4.9t²-38t+48.25<0

Using the quadratic formula: t=(38±√(38²-4×4.9×48.25))/9.8=6.15537 and 1.59973 seconds. The ball is above 50m between these times, so that’s 6.15537-1.59973=4.56 seconds to 2 decimal places.

by Top Rated User (775k points)

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