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Anna [14]
2 years ago
11

The distributive property says that if​ a, b, and c are numbers or​ variables, then ​a(bplus+​c)equals=abplus+ac and ​a(bminus−​

c)equals=abminus−ac. Use the distributive property to distribute the 4 to the terms inside of the parentheses.
4(x+2)=
Mathematics
1 answer:
iren [92.7K]2 years ago
3 0
Using Distributive property, you can write it as:
4(x+2) = 4x + 8

In short, Your Answer would be 4x + 8

Hope this helps!
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Consider a value to be significantly low if its z score less than or equal to minus−2 or consider a value to be significantly hi
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Answer:

If the weight is higher than 5.8886 gr would be considered significantly high

If the weight is lower than 5.6121 gr would be considered significantly low

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:

X \sim N(5.75241,0.06281)  

Where \mu=5.75241 and \sigma=0.06281

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

For the case when z =-2 we can do this:

-2 = \frac{X-5.75241}{0.06281}

And if we solve for X we got:

X = 5.75241 -2*0.06281 =5.6121

And for the other case when Z=2 we have:

2 = \frac{X-5.75241}{0.06281}

And if we solve for X we got:

X = 5.75241 +2*0.06281 =5.8886

If the weight is higher than 5.8886 gr would be considered significantly high

If the weight is lower than 5.6121 gr would be considered significantly low

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Step-by-step explanation:

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Step-by-step explanation:

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