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2 years ago

A rocket is launched from a tower. The height of the rocket, y in feet, is rel

Mathematics

1 answer:

VikaD [51]2 years ago

6 0

9514 1404 393

Answer:

9.70 seconds

Step-by-step explanation:

The zero of the equation can be found using the quadratic formula.

ax² +bx +c = 0

x = (-b ±√(b² -4ac))/(2a)

We are only interested in the positive value of x, so this will be ...

x = (-147 -√(147² -4(-16)(80)))/(2(-16)) = (147 +√2679)/32

x ≈ 9.7028 ≈ 9.70 . . . . seconds

The rocket will hit the ground after about 9.70 seconds.

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