You have a coupon for 15% off any purchase at an electronics store. If you buy a $120 tablet, how much will you save?

If you buy a $120 tablet you will save $18 because 15% of $120 = $102 and $120 - $102 = $18.  

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²

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.