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arsen [322]
3 years ago
9

I need to knw whats the slope of the graph pls, no links

Mathematics
1 answer:
kykrilka [37]3 years ago
3 0

Answer:

4/5 or 0.8

Step-by-step explanation:

Equation of the line:

y = 0.8x – 2.4 or y = 4/5x–12/5

When x=0, y = -2.4

When y=0, x = 3

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3 years ago
X divided by 8=1.5 divided by 2<br><br> solve for "x"
Travka [436]
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8 0
2 years ago
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Gnoma [55]
That means that the discounts are the same
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4 0
2 years ago
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
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PolarNik [594]

Answer:

77.4

Step-by-step explanation:

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