Agym teacher at jackson high school wants the school to have a new team sport: soccer, lacrosse, or rugby. she will take a survey to determine which of those sports most students prefer. which population would provide a random sampling for the gym teacher to use?
a: all students at the school who are sixteen years old
b: all students who buy lunch at the school on friday
c: half of the students who play on team sports at the school
d: every third student arriving at school

answer: 298143

step-by-step explanation:

- "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."

step-by-step explanation: