A city map uses a scale in which 2.5 centimeters represents 3 kilometers. The distance on the map between the post office and the library is 9 centimeters.
What is the actual distance between the post office and library in kilometers?
0.83 kilometers
7.5 kilometers
10.8 kilometers
22.5 kilometers

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?