Solve for x. 2(x - 4) = 6(x+2)

Mathematics

2 answers:

nekit [7.7K]3 years ago

6 0

The answer is x= -5 !!!!

Thepotemich [5.8K]3 years ago

4 0

4x+2=2(x+6)
4x+2=2x+12

Subtracted 2x from both sides

2x+2=12

Now subtract 2 from both sides

2x=10

Divide 2 from both sides

x=5

You might be interested in

How do I find the height of the triangle using pyhthagreon theorem?

Llana [10]

Answer:

<h2>Pythagorean theorem reads as:</h2>

<h2>in which p reads as perpendicular so </h2>

$p = \sqrt{h {}^{2} - {b}^{2} }$

7 0

3 years ago

A population has a standard deviation of 5.5. What is the standard error of the sampling distribution if the sample size is 81?

VladimirAG [237]

Answer:

$\sigma = 5.5$

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution $\bar X$ and for this case we know that the distribution is given by:

$\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})$

And the standard error would be:

$\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}$

And replacing we got:

$\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611$

Step-by-step explanation:

For this case we know the population deviation given by:

$\sigma = 5.5$

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution $\bar X$ and for this case we know that the distribution is given by:

$\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})$

And the standard error would be:

$\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}$

And replacing we got:

$\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611$

4 0

3 years ago

Please help!! I literally have no idea what to do here.

nika2105 [10]

I believe it's it's d
Sorry if I'm wrong I'm mr lemonade

3 0

2 years ago