Aaron’s boat travels 9 mile per hour in still water. The speed of the river is 4 miles per hour. How long will it take Aaron to travel 18 miles downstream

Let r = 3. what is the value of r + 58?

Find the solution of each of the following.

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )