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Stella [2.4K]
3 years ago
8

If I add 9 to my number,I get six what is my number?

Mathematics
2 answers:
disa [49]3 years ago
7 0
Its tricky naa ans is -3, -3+9=6
jeka943 years ago
6 0
-3. 6-9= -3

Hope this helps! :D
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Can you help me on question six?!
Amanda [17]

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Step-by-step explanation:

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3 years ago
A publisher reports that 45% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is
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Answer:

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Step-by-step explanation:

Information given

n=370 represent the sample selected

\hat p=0.4 estimated proportion of  readers owned a laptop

p_o=0.45 is the value that we want to test

z would represent the statistic

p_v represent the p value

Creating the hypothesis

We need to conduct a hypothesis in order to test if the true proportion of readers owned a laptop is different from 0.45, the system of hypothesis are:  

Null hypothesis:p=0.45  

Alternative hypothesis:p \neq 0.45  

The statistic is:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing we got:

z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933  

Calculating the p value  

We have a bilateral test so then the p value would be:

p_v =2*P(z  

8 0
2 years ago
6x-4y=8 solve for variable x
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Find the missing length indicate
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Answer:

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just search on the internet "right triangle calculator"  and click one of the links

4 0
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