What is the mode of the following numbers?
9, 8, 7, 1, 1

In two fractions have the same denominator but different numerators,which fraction is greater? give an example

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

What is the perimeter of an isosceles triangle with each leg measuring 2x+3 and the base measuring 6x-2?