Lines a and b are parallel.

what is the measure of angle m?

enter your answer in the box.
m =
\degree

m = 55

Step-by-step explanation:

125 and m are adjacent angles  (supplementary).

remember supplementary angles add up to 180

so sub 180 and 125 to get the angle measure of m

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."