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2 years ago

Which expression are equivalent to 12x + 4 choose all the expressions that apply

Mathematics

2 answers:

frosja888 [35]2 years ago

8 0

Answer:

X= -1/3

Step-by-step explanation:

12x + 4 =0

12x = -4

X = -4 / 12

X = -1 / 3

Rama09 [41]2 years ago

4 0

Answer:

4(x+3),2(6x+2),1/2(24x+8),1/4(48x+16),1/3(36x+12),1/5(60x+16),1/6(72x+24),1/7(84x+28),1/8(96x+32),1/9(108x+36),1/10(120x+40)

Step-by-step explanation:

options were not given but hopefully some of these meet the criteria.

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A group of 59 randomly selected students have a mean score of 29.5 with a standard

algol [13]

Answer:

$29.5-1.671\frac{5.2}{\sqrt{59}}=28.37$

$29.5+1.671\frac{5.2}{\sqrt{59}}=30.63$

And we can conclude that the true mean for the scores are given by this interval (28.37; 30.63) at 90% of confidence

Step-by-step explanation:

Information given

$\bar X = 29.5$ represent the sample mean

$\mu$ population mean

s= 5.2 represent the sample standard deviation

n=59 represent the sample size

Confidence interval

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

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The degrees of freedom are given by:

$df=n-1=59-1=58$

The Confidence interval is 0.90 or 90%, the significance is $\alpha=0.1$ and $\alpha/2 =0.05$ , and the critical value is $t_{\alpha/2}=1.671$

Now we have everything in order to replace into formula (1):

$29.5-1.671\frac{5.2}{\sqrt{59}}=28.37$

$29.5+1.671\frac{5.2}{\sqrt{59}}=30.63$

And we can conclude that the true mean for the scores are given by this interval (28.37; 30.63) at 90% of confidence

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2 years ago

Do me a favor everyone: While you're waiting for an answer to your answer, go through the feed page's questions and report every

azamat

Have a nice day/night <3

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creativ13 [48]

Answer:

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Step-by-step explanation:

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Anna [14]

Answer:

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Mariulka [41]

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