sarahhusseinman sarahhusseinman

16-08-2022
Mathematics

contestada

PLEASE HELP ME PLS ITS MATH

PLEASE HELP ME PLS ITS MATH class=

Respuesta :

Medunno13 Medunno13

18-08-2022

Answer:

9

Step-by-step explanation:

We know that

[tex]h(t)=-16t^2+1296[/tex]

The balls hits the ground when h(t)=0, so

[tex]-16t^2 + 1296=0 \\ \\ t^2 - 81=0 \\ \\ t^2 = 81 \\ \\ t=9[/tex]

Note I only considered the positive case because time must be positive.

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