John took a 5 1/4 mile walk to his friends house. he left at 11 a. m. and arrived at his friends house at 1 p. m. what was his average speed of walking? if the return trip took a half hour longer, how much lower was his average speed on the return trip than on the trip to his friends house?

i believe the answer is 68cm

step-by-step explanation:

i just took 34 x 2 because the space between v and y is the same as y to k.

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.