What do all these numbers have in common 13%, 10%, 0.125, and 1/5

i belive those are the ones that are under 90 degreese.

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.

the answer is -6

step-by-step explanation:

the answer is -6 because its next to the variable m