Respuesta :

[tex]t^2 - 75 = 0[/tex]

Add 75 to the other side to isolate the [tex]t^2[/tex]

[tex]t^2 = 75[/tex]

Take the square root of both sides to cancel out the [tex]t^2[/tex]

[tex] \sqrt{t^2} = \sqrt{75} [/tex]

t = 8.6602540

I'd round it.

t = 8.7