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Firdavs [7]
3 years ago
10

I earned $100. I wish to give 15% of this to my mother. How much should I give her?

Mathematics
2 answers:
garik1379 [7]3 years ago
6 0
<h2><em>All of it. Be kind to your mother.</em></h2><h2><em></em></h2><h2><em></em></h2><h2><em></em></h2><h2><em>In all seriousness, 15% of 100 is itself. 15. If it was 27%, it'd be 27. So on and so forth.</em></h2>
Natali [406]3 years ago
6 0

Answer:

$15

Step-by-step explanation:

15% = 0.15

100(.15) = 15

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Answer:

a) 0.1587 (or 15.87%)

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We need to find the area under the Normal curve with a mean of 4.5 mm and a standard deviation of 1.5 mm to the left of 3 mm

<h3>(See picture 1 attached) </h3>

We can do that with the help of a calculator or a spreadsheet.

<em>In Excel use </em>

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<em>In OpenOffice Calc use  </em>

<em>NORMDIST(3;4.5;1.5;1) </em>

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(b) the thickness is more than 7.0 mm

Now we need the area to the right of 7 (1 - the area to the left of 7)

<h3>(See picture 2 attached) </h3>

<em>In Excel use </em>

<em>1-NORMDIST(7,4.5,1.5,1)  </em>

<em>In OpenOffice Calc use  </em>

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and we get the value 0.0478 (or 4.78%)

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<h3>(See Picture 3) </h3>

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Area to the left of 3 + Area between 3 and 7 + Area to the right of 7 = 1

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0.1587 +  Area between 3 and 7 + 0.0478 = 1

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Area between 3 and 7 = 1 - 0.1587 - 0.0478 = 0.7935 (or 79.35%)

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