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Zina [86]
3 years ago
6

9x-y x=4 y =9 evaluate

Mathematics
2 answers:
Arisa [49]3 years ago
8 0

Answer:

27

Step-by-step explanation:

9(4)-9= 27

maks197457 [2]3 years ago
5 0

Answer:

27

Step-by-step explanation:

the answer i<em>s 27 because y =9 and X=4 the equation would be 9*4-9 and 9*4 equles 36 -9 witch is 27</em>

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Of 136 randomly selected adults, 33 were found to have high blood pressure. Construct a 95% confidence interval for the true of
navik [9.2K]

Answer:

The 95% confidence interval of the proportion of all adults that have high blood pressure is 0.17059 < \hat{p} < 0.314695

Step-by-step explanation:

The confidence interval for a proportion is given by the following formula;

CI=\hat{p}\pm z\times \sqrt{\frac{\hat{p}(1-\hat{p})}{n}}

Where:

x = 33

n = 136

\hat{p} = x/n = 33/136 = 0.243

z value for 95% confidence is 1.96

Plugging in the values, we have;

CI=0.243\pm 1.96\times \sqrt{\frac{0.243(1-0.243)}{136}}

Which gives;

0.17059 < \hat{p} < 0.314695

Hence the 95% confidence interval of the proportion of all adults that have high blood pressure = 0.17059 < \hat{p} < 0.314695

From the above we have;

23.2 < x < 42.798

Since we are dealing with people, we round down as follows;

23 < x < 42.

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(06.04 HC) The graph shows Wilson's science scores versus the number of hours spent doing science homework. A graph titled Wilso
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Answer:

The answer 55

Step-by-step explanation:

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I don't know if I made myself clear but good luck! :)

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