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Nesterboy [21]
3 years ago
9

Write the phrase as an expression. 28 divided by 7

Mathematics
1 answer:
4vir4ik [10]3 years ago
4 0
The answer would be 28/7

Hope this helps

Have a great day/night

Feel free to ask any questions
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Avery bought 5 packs of pencils there were eight pencils in each back if every team line pencils to her friends how many pencils
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Answer:

31

Step-by-step explanation:

Avery has 31 left

5 x 8 = 40

40 - 9 = 31

therefore avery has 31 pencils left

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2 years ago
Okay so i'm not sure what i'm doing wrong but I need help. The top 2 are correct (I checked my answer) but the rest are wrong. C
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Audrey is practicing basketball. She makes a basket from the free throw line 8 out of 25 shots. which decimal shows the fraction
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3 years ago
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3 years ago
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What is the value of the correlation coefficient r of the data set?
enyata [817]

The correct option will be:  C) 0.84

<u><em>Explanation</em></u>

Formula for Correlation coefficient :

r= \frac{n(\Sigma xy)-(\Sigma x)(\Sigma y)}{\sqrt{[n\Sigma x^2-(\Sigma x)^2][n\Sigma y^2-(\Sigma y)^2]}}

First, for each point(x, y), we need to calculate x², y² and xy .

Then, we will find sum all x, y, x², y² and xy, which gives us Σx, Σy, Σx², ∑y² and Σxy

<em>(Please refer to the attached image for the table )</em>

Here we got, ∑x = 44 , ∑y = 183 , ∑x² = 362 , ∑y² = 6575 and ∑xy = 1480

'n' is the total number of data set, which is 7 here.

So, plugging those values into the above formula..........

r= \frac{n(\Sigma xy)-(\Sigma x)(\Sigma y)}{\sqrt{[n\Sigma x^2-(\Sigma x)^2][n\Sigma y^2-(\Sigma y)^2]}}\\ \\ r=\frac{7(1480)-(44)(183)}{\sqrt{[7(362)-(44)^2][7(6575)-(183)^2]}}\\ \\ r=\frac{10360-8052}{\sqrt{(598)(12536)}}\\ \\ r=\frac{2308}{\sqrt{7496528}}\\ \\ r=0.84

So, the value of the correlation coefficient is 0.84

4 0
2 years ago
Read 2 more answers
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