2 years ago

HELP PLEASE!!

Mathematics

1 answer:

Murljashka [212]2 years ago

5 0

Eq.19903638=0.779 more questions

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Greg is in a car at the top of a roller-coaster ride. The distance, d, of the car from the ground as the car descends is determi

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It takes 3 seconds over the interval [0,3]

Step-by-step explanation:

To find when the roller coaster reaches the ground, find when d=0.

$0=144-16t^2$

To solve divide each term by 16 and factor:

$\frac{0}{16}=\frac{144}{16} -\frac{-16t^2}{16} \\0= 9 - t^2\\0=(3-t)(3+t)$

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This means the car is in the air from 0 to 3 second.

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