A bus travels 80 km in two hours. Calclulate the speed of the

40km/hr

Step-by-step explanation:

formula: s=d/t

d=80km

t=2hrs

so you’re going to decided the two and get the answer 40

answer would be 40KM/HR

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0

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.