Let's look at the difference in speed between the two: it's 39-15.6=23.4 km/h
(we can just subtract this because they are traveling in the same direction) - this means that it's as if the slower train (the freight) was in place and the passenger train was traveling at 23.4 km/h
No, the freighter left 3.9 hours earlier, during which it traveled
15.6*3.9=60.84 km
So they will meet when the passenger train will catch up on those 60.84 km.
It does it with 23.4 km/h so it will need:

So the freighter will be travellinf for 2.6 more hours than the other train - a total of (2.6+3.9=6.5) 6.5 hours!
The square root of 169 is 13 because 13X13 equals to 169.
Answer:
Yes
Step-by-step explanation:
Each shoe costs $40.
Then 3 pairs would cost :
40 x 3
= $120
Answer: domain and range are all real numbers!
Step-by-step explanation:
Answer:
Put a picture of the whole thing
Step-by-step explanation: