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julia-pushkina [17]
3 years ago
8

Which inequality can be used to represent this problem? pleaseeeee help

Mathematics
1 answer:
Simora [160]3 years ago
7 0

Answer

Option ( C )  is correct i.e 3.5x+6 ≤ 85 .

Reason

As given in the question

x represented the pounds of propane delivered .

As given

Propane costs $3.50 per hundred pounds .

there is a $6 monthly delivery fee.

A family has budgeted $85 for their propane this month.

Than the equation becomes

3.5x+6 ≤ 85

Therefore option (C) is correct .

Hence proved


 

     

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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;

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

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4 0
3 years ago
BRAINLYYYY PLUS 100 PointsThe difference between two numbers is 84 and their sum is 278. What are the numbers? Hint( answer is x
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Answer:

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Step-by-step explanation:

let called the first number is x

the second number would be called y

We are given that:

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Let change x in (2) into (1):

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Divide both side by 2, we got:

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x = 181 and y = 97

Hope this helped :3

4 0
3 years ago
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