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4 years ago

Which two consecutive whole numbers does square root 39 lie between? why?

Mathematics

2 answers:

dmitriy555 [2]4 years ago

8 0

The square root of 39 is approximately 6.245 so it lies between 6 and 7

Drupady [299]4 years ago

5 0

Answer:

→6²=36

→7²=49

→36 < 39 < 49

→6²< 39 < 7²

$\rightarrow 6< \sqrt{39}$

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Answer:

The information given is not enough to determine their ages explicitly, so, here their ages are given in terms of Anna's age, which is the best that could be determined.

Anna's age = x years

Robert's age = (x - 11) years

Sara's age = (x - 9) years

David's age = (x - 1) years

Step-by-step explanation:

Let Anna be x years old.

Anna's age = x

Because Anna is 11 years older than Robert, we can say Robert's age is Anna's age minus 11.

Robert = x - 11

But Robert is 2 years younger than Sara, we can say Sara's age is Robert's age plus 2

Sara = (x - 11) + 2

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David is 8 years older than Sara, we can say David's age is Sara's age plus 8.

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Answer:

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Step-by-step explanation:

Confidence interval = mean + or - (t×sd)/√n

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t-value corresponding to 36 degrees of freedom and 90% confidence level is 1.688

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Upper limit = $6.88 + (1.688×$1.94)/√37 = $6.88 + $0.54 = $7.42

90% confidence interval is ($6.34, $7.42)

Margin of error (E) = (t×sd)/√n = (1.688×$1.94)/√37 = $0.54

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90% confidence interval is ($1902.49, $2225.51)

Margin of error = (1.688×$582)/√37 = $161.51

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