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spin [16.1K]
3 years ago
13

Factor the polynomial 8k^2 +80k +200

Mathematics
1 answer:
blondinia [14]3 years ago
6 0
<h3>Solution:</h3>

8 {k}^{2}  + 80k + 200 \\  = 8( {k}^{2}  + 10k + 25) \\  = 8  [{k}^{2}  + 2(k)(5) +  ({5})^{2} ] \\  = 8( k + 5) ^{2}

<h3>Answer:</h3>

8( k + 5) ^{2}

<h3>Hope it helps..</h3>

ray4918 here to help

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Answer:

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S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}  

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b=\bar y -m \bar x  

On this case the correct answer would be:

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Step-by-step explanation:

Assuming the following options:

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B.  there is a negative correlation between X and Y

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If we want a model y = mx +b where m represent the lope and b the intercept

m=\frac{S_{xy}}{S_{xx}}  

Where:  

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}  

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}  

\bar x= \frac{\sum x_i}{n}  

\bar y= \frac{\sum y_i}{n}  

And we can find the intercept using this:  

b=\bar y -m \bar x  

On this case the correct answer would be:

E.  none of the above

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3 years ago
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sweet-ann [11.9K]
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