In the figure at right DB is a diameter of the circle with center A. Find m∠CDB if m∠CAB=45.

Which fraction below is equivalent to 10/12?

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 answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)