Find the value of a/b/c if a= 1 3 , b= 1 2 , c= 1/6 .

Which equation represents the partial sum of the geometric series?

This is so hard and it’s for a test

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