In the figure below, segment DE is parallel to segment BC and segment EF is parallel to AB: Theorem: A line parallel to one side of a triangle divides the other two proportionately.
Which statement can be proved true using the given theorem?

I Th is it is the 3rd one because segment we is parallel to bc so if they are parallel we know segment bf is 15

- "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."

about 0.75 hours

step-by-step explanation: