D = rt, Distances Equal
72t = 90(t-1)
90 = 18t
90/18 = t = 5hr
second car catch up to the first in 4hrs
Answer:

Step-by-step explanation:
Using:

we will have two solutions.
x^2-3x+1=0
So, a=1 b=-3 c=1

We have two solutions:


To solve for x you have to bring the 12 to the other side
How do we do this?
Well if you think about it this is technically what the equation shows

This means to isolate x you can multiply both sides by 12 and that will cancel
from the right side


can be further simplified to...
9
^^^This is the answer
Check:
3/4 = 9/12
3/4 = 3/4
Hope this helped!
~Just a girl in love with Shawn Mendes
The slope is 6.cuse the slope also means sometimes 6
F+g(x) = f(x) + g(x) = 3x-1 + x+2 = 4x+1