Four pairs of shoes cost $80 what is the cost of seven pairs of shoes

80 divided by 4 is 20

$20 times 7 shoes is

$140

Hope this helps!

one pair is 20$

Step-by-step explanation:

If one pair is 20$ then 7 pairs must cost 140 dollars

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.