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3 years ago

Please answer my question

Mathematics

1 answer:

Aleksandr [31]3 years ago

8 0

Answer:

0.327

Step-by-step explanation:

=> $\frac{\sqrt{2}\sqrt{5} -\sqrt{5} }{2\sqrt{2} }$

Let's put all the givens

=> $\frac{(1.414)(2.236)-(2.236)}{2(1.414)}$

=> $\frac{3.162-2.236}{2.828}$

=> $\frac{0.926}{2.828}$

=> 0.327

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Y=x+5 <br> 4x+y=20 <br> show work

evablogger [386]

Answer:

(3,8)

Step-by-step explanation:

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The diameters of aluminum alloy rods produced on an extrusion machine are known to have a standard deviation of 0.0001 in. A ran

Murljashka [212]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The null hypothesis is rejected this means that $\mu \ne 0.5025$

The 95% confidence interval is $0.5045608 < \mu < 0.5046392$

Step-by-step explanation:

From the question we are told that

The standard deviation is s= 0.0001

The sample size is n = 25

The sample mean is $\= x = 0.5046 \ in$

The population mean is $\mu = 0.5025 \ in$

The null hypothesis is $H_o : \mu = 0.5025$

The alternative hypothesis is $H_a : \mu \ne 0.5025$

The test statistics is mathematically represented as

$t = \frac{0.5046 - 0.5025}{ \frac{0.0001}{\sqrt{25} } }$

$t = 105$

So the p-value from the z-table is mathematically represented as

$p-value = 2 * P( z > 105)$

$p-value = 0.000$

seeing that

$p-value < \alpha$ we reject the null hypothesis

The critical value of

$\frac{\alpha }{2}$ obtained from the normal distribution table is

$Z_{\frac{\alpha }{2} } = 1.96$

The margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} }*\frac{s}{\sqrt{n} }$

=> $E = 1.96 *\frac{0.0001}{\sqrt{25} }$

=> $E =3.92 *10^{-5}$

The 95% confidence level is mathematically represented as

$\= x - E < \mu < \= x + E$

=> $0.5046 - 3.92 *10^{-5} < \mu < 0.5046 + 3.92 *10^{-5}$

=> $0.5045608 < \mu < 0.5046392$

8 0

3 years ago

.<br> Help please hurry<br> Complete the table by plugging in the X value to solve for the y value

UkoKoshka [18]

Answer:

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Step-by-step explanation:

if I understand correctly, Y= x+4, you should add all the numbers in the X column by 4

Example:

-7

-7 plus 4 would be -3

the reason for this is when adding negative numbers you always go down instead of going up because if you add the way we add normal number then you will keep going deeper into the negative numbers.

Hope this helps!

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3 years ago

LCM and the GCF of 12 and 32?

OverLord2011 [107]

The greatest common factor of 12 and 32 is 4.

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4 years ago

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Komok [63]

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Please answer my question ​

Please answer my question