Cilia cycles 4.2 km every morning. How many feet are in 4.2 km, given that 1 mile = 1.609 km and 1 mile = 5,280 feet?

13,780.8 feet

Step-by-step explanation:

1 mile = 1.609km

1 mile = 5,280ft

Convert 4.2km to miles

1.609km = 1 mile

4.2km = 4.2/1.609 miles

= 2.610 miles

Convert 2.610 miles to feet

1 mile = 5,280ft

2.610 miles = 2.610 × 5,280

= 13,780.8 feet

- "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."

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i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

mark brainliest!