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Sidana [21]
3 years ago
14

John ran the​ 100-m dash with a time of 9.87sec. If this pace could be maintained for an entire 26-mi marathon, what would his t

ime​ be? (Notice that 1 m ≈ 3.281 ft and 1 mi = 5280 ft.)
Hr____

Minutes____

Seconds____
Mathematics
1 answer:
stiv31 [10]3 years ago
5 0

Answer:

1 hour

8 min

49 sec

Step-by-step explanation:

we know that

1 m=3.281 ft

1 mi=5,280 ft

<em>Convert 26 mi to ft</em>

26 mi=26*5,280=137,280 ft

<em>Convert 137,280 ft to m</em>

137,280 ft=137,280/3.281=41,840.90 m

using proportion

9.87/100=x/41,840.90

x=41,840.90*(9.87)/100

x=4,129.70 sec

Remember that

1 hour=3,600 sec

1 hour=60 min

1 min=60 sec

4,129.70 sec=4,129.70/3,600= 1.147 h

0.147*60=8.82 min

0.82*60=49 sec

therefore

1 hour

8 min

49 sec

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pantera1 [17]

Answer:

44

Step-by-step explanation:

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3 0
3 years ago
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zavuch27 [327]
It'd be easier to do #18 if y ou were to break it up:

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Sum from n=1 to 14 of n =  S      = ---------------------------------
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= ---------------- = 7(15) = 105 
           2

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3 years ago
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gladu [14]

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What effect does a scale factor equal to 1 have on the dimensions of the image being scaled?
FromTheMoon [43]

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In the question ,

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we have to find the effect of change ;

we know that ,

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when the value of scale factor is 1 , then there is no change in the dimensions of the image .

when the value of scale factor is less than 1 , then the dimensions of new image is smaller than the original .

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Answer:

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