On a field trip, the ratio of teachers to students is 2: 9. if there are 81 students ion the field trip, how many teachers must there be.

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers