KatoKin KatoKin

09-06-2021
Mathematics

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I HAVE A HOUR LEFT PLEASE HELP!

I HAVE A HOUR LEFT PLEASE HELP class=

Respuesta :

sqdancefan sqdancefan

09-06-2021

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Answer:

5 seconds

Step-by-step explanation:

You want the positive value of x when y = 0.

0 = -18x² +90x

0 = -18(x)(x -5) . . . . . factor

x = 0 or 5 . . . . . values that make the factors zero

The ball will return to the ground after 5 seconds.

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