Which expression has the same value as -5 - (-9)?

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.

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.