Add the mixed numbers by finding the common denominator. two and four sixths plus three and one half equals blank

six and two twelfths
five and five eighths
five and two twelfths
six and five twelfths

Which of the following statement about pascal's triangle are true?

What is the relationship between all triangles that can be drawn given the same three angles

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