The flight of a kicked football follows the quadratic

Ответ:

queenmari49

20.01.2022

110.9 feet

Step-by-step explanation:

The function that models the flight of the ball is

$f(x) = - 0.02 {x}^{2} + 2.2x + 2$ where f(x) is the vertical distance in feet and x is the horizontal distance the ball travels

If the ball hits the ground, then f(x)=0

$\implies - 0.02 {x}^{2} + 2.2x + 2 = 0$

The solution is given by the quadratic formula:

$x = \frac{ - b \pm \sqrt{ {b}^{2} - 4ac} }{2a}$

We substitute a=-0.02, b=2.2, and c=2 to get:

$x = \frac{ - 2.2 \pm \sqrt{ {2.2}^{2} - 4 \times - 0.02 \times 2} }{2 \times - 0.02}$

This implies that:

$x = 110.90 \: or \: x = - 0.90$

Since we are dealing with time,

x = 110.90

To one decimal place, we have 110.9 feet

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nisha87

17.02.2021

The property of exponents is to tell us when you divide powers with the same base you have to subtract the exponents.

Step-by-step explanation:

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