There are 4 carriages connected to a train that is 52 meters long. If there were 8 carriages connected to the train, how long would it be?

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

What is always true when two whole numbers are subtracted?