What is the measure of ∠o in this quadrilateral?

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.

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

What is the distance between point a and b