Answer:
The ball will take 4.05 seconds to hit the ground.
Step-by-step explanation:
we have

This is a quadratic equation (vertical parabola) open down
The vertex is a maximum
we know that
The ball hit the ground when h=0
Solve the quadratic equation
For h=0

The formula to solve a quadratic equation of the form
is equal to

in this problem we have
so

substitute in the formula


---> the time cannot be a negative number

therefore
The ball will take 4.05 seconds to hit the ground.
Are you sure this is even possibly
Answer:
4x - 12y
Step-by-step explanation:
-2x - 4y + 6x - 8y
= 4x - 12y
20.89 times .25 to get 5.2225 so there would be $ 5.22 off so you would get 15.67