(test question) If you're good at geometry please help me

Find the lengths of the diagonals of this trapezoid.

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.

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}