Answer:
Hello!
Ok so first you plug in y as 8 and x as 4. You first do the math in the parentheses so 4-3 is 1, then 1 times 2 is 2. It should be like this 8=2. Then you do 8 divided by 2 which is 4.
Step-by-step explanation:
Answer: you can always use
but 30 cubic units
Step-by-step explanation:
because
It totally depends on speed at which train is moving.
If the speed of train is below 100 miles per hour the minimum distance maintained should be 4 feet.
If the speed of train is above 100 miles per hour and less than 125 miles per hour the minimum distance maintained should be 6.6 feet.(Approx)
As , when a train is moving with velocity more than this i.e above 125 miles per hour the minimum distance should be 15 feet.(Approximately)
Option (C) 15
There is no attached picture, but I guess it is like the one I attached.
If so, the first thing is finding the side measure:

Now, radius is half this measure: 15 in.
And circle area is:
Answer: 
Step-by-step explanation:

Since our ''y'' is already isolated, you can simply plug ''y'' information into the second equation.

Now we can use the first equation and replace ''x'' to find ''y''

To prove that your values are correct, take any of the equations and replace their values.
