The width of a rectangle is 7 less than it’s length. which expression represents the perimeter of the rectangle with a length of x.

What are “like terms”? why can we only add like terms?

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 : )

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319