A ball is thrown into the air from an apartment balcony and falls to the ground. The height of the ball, h metres, t seconds after being thrown is given by the formula: h=−5t2+10t+35 How long does it take for the ball to hit the ground

seconds

Step-by-step explanation:

When the ball hits the ground, its height will obviously be 0. Therefore, you can set up the equation the following way:

Plugging this into the quadratic equation, you get:

Since the time must be positive, it takes the ball seconds to hit the ground, or around 3.828. Hope this helps!

(- 1, 0 )

step-by-step explanation:

an x- intercept is where the function crosses the x- axis.

to find the x- intercept/s look for the value of x when f(x) = 0

from the given table there are 3 values of x where f(x) = 0

when x = - 1, x = 2, x = 3

the one that is listed is (- 1, 0 )

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