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aleksandrvk [35]
3 years ago
13

Five less than a number tripled

Mathematics
1 answer:
Elenna [48]3 years ago
3 0

Answer:

3(n-5)

Step-by-step explanation:

Less than indicates subtract and since 5 is less than a number <em>N</em> goes first.

Tripled goes on the outside because the number that is 5 less gets tripled

Hope this helps

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A chemist examines 12 sedimentary samples for bromide concentraction. The mean bromide concentration for the sample date is 0.43
Umnica [9.8K]

Answer:

a) z = 1.645

b) Lower endpoint: 0.422cc/m³

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Step-by-step explanation:

Population is approximately normal, so we can find the normal confidence interval.

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M = 1.645*\frac{0.0325}{\sqrt{12}} = 0.015

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b)

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Upper endpoint: 0.452 cc/m³

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