What is true about the solution of x^2 / 2x - 6 = 9 / 6x - 18

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.

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m