Answer:
Both trains are traveling at 90 miles per hour.
Step-by-step explanation:
We are told that the rate is the same for both trains, and we know that the distance traveled by train a plus the distance traveled by train b equals 585 miles.
We will use
formula to solve this problem.
Train A:
(Using 2.5 instead of 2 and 1/2)
Train B: 
We can set an equation to solve for rate R of trains as:





Therefore, rate of both train a and train b is 90 miles per hour.
Answer:
Increase Percentage =

Percentage increase in hairlength = 72%
Wait so what’s the question then?
We can do this by subtracting 7x from both sides, getting us:
11y= -7x+10.
We can then divide both sides by 11, giving our final answer:
y = -7/11x+10/11.
Hope this helped!
Answer:
5
Step-by-step explanation:
cos 60° = y / 10
y = 10 * 1/2 = 5