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The 100-yard dash race-times, in seconds, for the Johnston Middle School track team are:

 

13.9, 13.2, 12.7, 16.3, 14.5, 14.7, 12.9, 14.0, 13.5, 12.9, 13.7

 

If Kathy finished 0.4 of a second slower than the first-place finisher, how long did it take her to finish the race? Represent the data, including Kathy's, using a stem-and-leaf plot.

 

What fraction of the racers completed the 100-yard dash faster than 14 seconds?

How many seconds faster is the first-place finisher than the last-place finisher? What is the combined race time of the first-, second-, third-, and fourth-place finishers? Justify your reasoning.

 Apr 14, 2021
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The 100-yard dash race-times, in seconds, for the Johnston Middle School track team are:

 

13.9, 13.2, 12.7, 16.3, 14.5, 14.7, 12.9, 14.0, 13.5, 12.9, 13.7

 

If Kathy finished 0.4 of a second slower than the first-place finisher, how long did it take her to finish the race? Represent the data, including Kathy's, using a stem-and-leaf plot.

 

What fraction of the racers completed the 100-yard dash faster than 14 seconds?

How many seconds faster is the first-place finisher than the last-place finisher? What is the combined race time of the first-, second-, third-, and fourth-place finishers? Justify your reasoning.

 

 

 

Well first we can sort the race times from fastest to slowest to see easier

 

12.7, 12.9, 12.9, 13.2, 13.5, 13.7, 13.9, 14.0, 14.5, 14.7, 16.3.

 

Kathy took 13.1 seconds to finish the race

 

7/11 of the racers finished the 100-yard dash faster than 14 seconds?

 

3.6 in between the first place and the last place

 

A total of 51.7 seconds of the combined time of the first, second, third, and fourth.

 

Hope this helpedlaugh

 Apr 14, 2021
edited by Mathdory  Apr 14, 2021
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1. 13.1 

 

12.7 + 0.4 = 13.1


 

2. 7/11

 

 

 

3. 65.2 finishers

Guest Apr 14, 2021

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