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Helen [10]
3 years ago
6

Bob nailed wooden board sections to a fence. He nailed 2/9 of a section in 1/10 of an hour. Explain how to use the information t

o find two different unit rates
Mathematics
1 answer:
densk [106]3 years ago
8 0

Answer:

(I) The number of section nailed per hour is 2\frac{2}{9} sections/hour.

(II) The number of hours spent to nail a section is \frac{9}{20} hours/section.

Step-by-step explanation:

Bob nailed wooden board sections to a fence. He nailed 2/9 of a section in 1/10 of an hour.

From the above information, we can get two different unit rates and they are  

(I) The number of section nailed per hour and  

(II) The number of hours spent to nail a section.

Now, (I) the number of section nailed per hour is given by  

\frac{2}{9} \div \frac{1}{10} = \frac{2}{9} \times \frac{10}{1} = \frac{20}{9} = 2\frac{2}{9} sections/hour.

Again, (II) the number of hours spent to nail a section will be given by  

\frac{1}{10} \div \frac{2}{9} = \frac{1}{10} \times \frac{9}{2} = \frac{9}{20} hours/section. (Answer)

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Hence, we need to connect the vertices in such a way that the graph touches each and every vertex exactly once.

Option A: EFADECBA

From this description, we can see that the path starts from the vertex E and connects all the vertices but some of the vertices are repeated twice.

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Therefore, Option A is not the correct answer.

Option B: FECBAD

From this description, we can see that the path starts from the vertex F and connects all the vertices exactly once.

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Therefore, Option B is the correct answer.

Option C: ADEFBC

From this description, we can see that the path starts from the vertex A and connects all the vertices but the path from F to B has to touch the vertex A. Thus, the vertices are repeated twice.

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6 0
3 years ago
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Now for the exact answers:
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3 years ago
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