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Alex Ar [27]
3 years ago
12

Is the square root of 3 irrational​

Mathematics
2 answers:
Daniel [21]3 years ago
4 0

Answer: Yes it is irrational

Step-by-step explanation:

sertanlavr [38]3 years ago
4 0

Answer:

Yes.

Step-by-step explanation:

sqrt(3)=1.73205080...

Therefore, it's irrational.

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Answer:  (-\infty, 7)

You can write this as (-infinity, 7) if you aren't able to use the infinity symbol.

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Explanation:

Think of x < 7 as writing -\infty < x < 7

So x is between negative infinity and 7, excluding both endpoints.

To write -\infty < x < 7 in interval notation, we write (-\infty, 7)

The curved parenthesis tell us to exclude the endpoint.

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2 years ago
A recent poll of 700 people who work indoors found that 278 smoke. if the researchers want to be 98% confident of their results
Mice21 [21]

Answer:

We are given:

\hat{p}=\frac{278}{700}=0.397

z_{\frac{0.02}{2}}=2.33 is the critical value at 0.02 significance level

E=0.035 is the margin of error

Therefore, the required sample size is:

n=\hat{p}(1-\hat{p}) \left(\frac{z_{\frac{0.02}{2}} }{E} \right )^{2}

      =0.397(1-0.397) \left( \frac{2.33}{0.035} \right)^2

      =0.239391 \times 4431.755102

      =1060.922286 \approx 1061

Therefore, the required sample size n = 1061


5 0
3 years ago
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