What is the relationship and the measure of the missing angle?

What is (28 + 7 + 6 + 3) x 1/2 show your work

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.

Joanie watched 1 out of three of a movie in the morning