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Bogdan [553]
3 years ago
5

If a baseball player hits a baseball from 4 feet off the ground with an initial velocity of 64 feet per second, how long will it

take the baseball to hit the ground? Use the equation h = −16t2 + 4t + 4. Round your answer to the nearest hundredth.
0.36
0.39
0.61
0.65
Mathematics
2 answers:
miskamm [114]3 years ago
8 0

Answer:

0.64

Step-by-step explanation:

i just took the test

Vikentia [17]3 years ago
3 0

Answer:

0.64 seconds.

Step-by-step explanation:

When it hits the ground h(t) = 0.

0 = -16t^2 + 4t + 4

-4(4t^2 - t -1) = 0

t = [-(-1) +/- sqrt (1 - 4*4*-1)] / 8)

t = 0.64, -0.39

answer is 0.64 seconds.

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