Why do they delete my questions, man? I put math questions, DelETed, I put another question, DeLeTeD. I just wanna give out them points. T^T What's the square root of 9?

Name the most appropriate metric unit for each measurement

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 the discriminant if a quadratic equation is 4 which statement describes the roots?