Answer:

Step-by-step explanation:
To answer this problem, we must bear in mind that the express train travels 3 times faster than the freight train.
If we call F the distance that the freight train travels and we call E at the distance that the express train travels, we must have the distance between them after 15 minutes it must be 30 miles.
So

We also know that:
Since the express train travels 3 times faster than the freight train.
So, like both equations, we have to:

Then
miles in the opposite direction.
This is the distance you traveled in 15 minutes.
Therefore, the speed of the express train (
) is the distance traveled between the time it did

Answer:
6
Step-by-step explanation:
To solve this , we use the equation of finding a slope wig a line.
m = (y2 - y1)/(x2 - x1)
From the question, we know that:
y2 = y
x2 = 3
y1 = 2
x1 = 1
m = 2
Hence,
2= (y - 2)/(3 - 1)
2 = (y - 2)/2
4 = y - 2
y = 2 + 4 = 6
Answer:
C
Step-by-step explanation:
Answer:
2/3 or 2 over 3
Step-by-step explanation:
4 over three means 4 pieces out of 3. 4 pieces divided by 2 is 2 pieces.