At a shoe store, you take a random sample of 50 pairs of shoes and determine that the average cost is $42. Which statement is true?

answer: d. $20

step-by-step explanation:

just took the test

this is answer of 144 cubic meters

answer: i realy don't get it that much can you me figer it out pleas you

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."