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Usimov [2.4K]
3 years ago
10

Solve: 2.5k+47.4=81.9

Mathematics
1 answer:
belka [17]3 years ago
8 0

Answer:

k=13.8

Step-by-step explanation:

Given function:

  • 2.5k+47.4=81.9
  • to find k..

<u><em>Subtract final and middle value:</em></u>

  • 81.9-47.4= 34.5

<em><u>Divide by 2.5:</u></em>

  • 34.5*2.5=13.8

Therefore, k=13.8..

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In science class the girl to boy ratio is 6 to 2. If there are 30 girls how many boys are there?
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Answer:

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Step-by-step explanation:

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2 years ago
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Anna [14]

The porosity of the gravel sample is 28.75%

We have to determine.

What is the porosity of the gravel sample?

<h3>The porosity of the gravel sample;</h3>

Porosity is the term which is defined as the volume of voids present in the soil to the total volume of the soil.

The formula used to calculate the Porosity is;

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Hence, the porosity of the gravel sample is 28.75%

Learn more about "porosity" :

brainly.com/question/2593663

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