Answer:
<em>3 hours</em>
Step-by-step explanation:
Given that:
Average speed of Willie = 40 km/h
After 2 hours, Gabriella traveled in opposite direction at an speed of 70 km/h.
After some time, they are 410 km apart.
To find:
Number of hours = ?
Solution:
For the first two hours, Willie traveled alone.
Formula for distance:

Distance traveled in two hours by Willie = 
Now, they both travel in opposite directions.
So the relative speed is = 40 + 70 = 110 km/h
The distance traveled by them = 410 - 80 = 330 km

Therefore, the time taken is <em>3 hours.</em>
Answer:
x = -3
y = -2
Step-by-step explanation:
Cindy used 17.25 because 15 × .5 = 2.25 and if you add it to 15 ypu get 17.25
Answer:
its very simple you just need to collect like terms...
which is 4x-6x+6+9 which is
-2x+15.
This is my answer I hope it helps you.