The sum of eighty eight and fifty six divided by 12

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

If chord ab is congruent to chord cd, then what must be true about ef and eg?

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39