You're given three angle measurements of 30°, 70°, and 80°. How many triangles can you construct using these measurements? OA. 0
ОВ.
1
OC. 2
OD. infinitely many

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.