3 years ago

Can sombody please help me?!

Mathematics

1 answer:

Mama L [17]3 years ago

5 0

You need to show II in this picture for us to know what it’s asking! :(

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Solve each system by substitution

Studentka2010 [4]

Answer:

look, equation ii and vi are contradicting each other....

Step-by-step explanation:

after eliminating those equation you can find the value of x and y.

y=-6

x=3

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3 years ago

Rent and other associated housing costs, such as utilities, are an important part of the estimated costs of attendance at colleg

Anton [14]

Answer: $(336.49,\ 355.51)$

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size : $n= 314$ , which is a large sample , so we apply z-test .

Sample mean : $\overline{x}=346$

Standard deviation : $\sigma= 86$

Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

Now, a confidence interval at the 95% level of confidence will be :-

$346\pm(1.96)\dfrac{86}{\sqrt{314}}\\\\\approx346\pm9.51\\\\=(346-9.51,\ 346+9.51)\\\\=(336.49,\ 355.51)$

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3 years ago

SOLVE FOR X AND THEN SOLVE FOR A

Licemer1 [7]

Answer:

Step-by-step explanation:

A + B= 180°

(5x+20)+(9x-92)=180°

14x-72=180°

14x=252

x=18

A=5(18)+20

A=110

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1 year ago

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mixas84 [53]

Answer:

?????????what is it???????

Step-by-step explanation:

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3 years ago

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This is geometry. Please help explain this.

lina2011 [118]

Sorry I don’t now Gemini

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3 years ago

Can sombody please help me?!​

Can sombody please help me?!