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3 years ago

12x+200=644 answer: x=37 whats the variable coefficient and the constant

Mathematics

1 answer:

givi [52]3 years ago

6 0

Hello!

The variable coefficient is a constant that is multiplied by the variable. As you can see, 12 is multiplied by x. Therefore, 12 is our variable coefficient.

Our constant is a number that is not multiplied by a variable. Our two constants are both 200 and 644.

Therefore, our answer is below.

Coefficient: 12

Constants: 200, 644

I hope this helps!

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Answer:

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Step-by-step explanation:

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3 years ago

Plz help will mark brainliest

Leni [432]

Answer:

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3 years ago

A simple random sample of size nequals15 is drawn from a population that is normally distributed. The sample mean is found to be

Bond [772]

Answer with explanation:

To test the Significance of the population which is Normally Distributed we will use the following Formula Called Z test

$z=\frac{\Bar X - \mu}{\frac{\sigma}{n}}$

$\Bar X =31.1\\\\ \sigma=6.3\\\\ \mu=25\\\\n=15\\\\z=\frac{31.1-25}{\frac{6.3}{\sqrt{15}}}\\\\z=\frac{6.1\times\sqrt{15}}{6.3}\\\\z=\frac{6.1 \times 3.88}{6.3}\\\\z=3.756$

→p(Probability) Value when ,z=3.756 is equal to= 0.99992=0.9999

⇒Significance Level (α)=0.01

We will do Hypothesis testing to check whether population mean is different from 25 at the alpha equals 0.01 level of significance.

→0.9999 > 0.01

→p value > α

With a z value of 3.75, it is only 3.75% chance that ,mean will be different from 25.

So,we conclude that results are not significant.So,at 0.01 level of significance population mean will not be different from 25.

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3 years ago