3 years ago

3. A ball bounces and you are launching a rock to hit it. The equation of the ball bouncing is

Mathematics

1 answer:

natka813 [3]3 years ago

6 0

Answer:

When x = 6.

Step-by-step explanation:

WE need to solve the system:

y = - x^2 + 4x + 4

y = -2x + 4

Equating:

- x^2 + 4x + 4 = -2x + 4

0 = x^2 - 4x - 4 - 2x + 4

x^2 - 6x = 0

x(x - 6) = 0

x = 0, 6.

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