Answer:
(4 seconds)
Step-by-step explanation:
Basically:
All you have to do is find the distance between the 2 roots of the parabola
By plugging in the value of a=-5, b=20, and c=2 into the quadratic formula:
Quadratic Formula = x=( -b±√(b^2-4*a*c))/(2*a)
We get 2 roots :
a) (10-√110)/5
b) (10+√110)/5
And then we add the 2 roots, thus getting 4
ANSWER: 4 seconds
