There are two couches against a wall. one takes up 4/9 of the wall and the other takes up 1/5 of the wall. how much of the wall is covered by couches.

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expressions 4s +9s represents the total number of items that will be displayed on s shelves. simplify this expression

Use the data on the dot plot to answer the question. how many people read for more than three hours last week? i'm on a unit test review

Find the midpoint m of z1=(8+5i) and z2=(12+3i)