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patriot [66]
3 years ago
5

Solve for x if the equation is 2/5(x+1)=g,

Mathematics
2 answers:
Rufina [12.5K]3 years ago
8 0
In order to get x, one needs to simply rearrange the whole equation to solve for x.
\frac{2}{5}(x+1)=g

Multiply the two sides of the equation by 5/2.
\frac{5}{2} [\frac{2}{5} (x+1)=g]

Distributing the 5/2 and simplifying, the resulting equation would be:
\frac{10}{10} (x +1)=  \frac{5}{2}g
(x +1)=  \frac{5}{2}g


Simplifying the equation and subtracting 1 from each side of the equation the final equation for solving x is:
x =  \frac{5}{2} g - 1
DochEvi [55]3 years ago
4 0
\dfrac{2}{5}(x+1)=g\ \ \ |multiply\ both\ sides\ by\ \dfrac{5}{2}\\\\x+1=\dfrac{5}{2}g\ \ \ |subtract\ 1\ from\ both\ sides\\\\\boxed{x=\frac{5}{2}g-1}\to\boxed{x=\frac{5g-2}{2}}
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In a recent study of 42 eighth graders, the mean number of hours per week that they watched television was 19.6. Assume the popu
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Answer:

19.6-2.42\frac{5.8}{\sqrt{42}}=17.43    

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And the best option for this case would be:

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Step-by-step explanation:

Information given

\bar X= 19.6 represent the sample mean

\mu population mean

\sigma= 5.8 represent the population deviation

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Confidence interval

The confidence interval for the mean is given by the following formula:

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The degrees of freedom, given by:

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Since the Confidence is 0.98 or 98%, the significance would be \alpha=0.02 and \alpha/2 =0.1, and the critical value would be t_{\alpha/2}=2.42

Replacing we got:

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And the best option for this case would be:

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