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Gennadij [26K]
3 years ago
7

16.75 + 3.2d – 4 + 6d = 51.39​

Mathematics
1 answer:
Naya [18.7K]3 years ago
8 0
It’s 4.2 because it’s and given and you add then yeah you get the point
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The caplan family was going to New York City to ring in the New Year. 16 family members each paid $341 for their plane ticket to
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1 persona pagaba 341 por ida y 298 por venido lo que significa que 1 persona paga en total= 639
si son 16 seria= 639*16=10224 en total
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3 years ago
Which equation matches the graph
Alina [70]

Answer:

C

Step-by-step explanation:

You can see from the graph that everytime x goes up by 1, y goes down by 4, so the slope is -4.

The y-intercept is at -1

This means that the equation would be C. y = -4x - 1

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A marathon is a race that is 42.195 kilometers long. Joel ran two marathons this year. How many total kilometers did he run betw
nignag [31]
84.39 is ya answer to the question
8 0
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
3 years ago
Read 2 more answers
I need to solve this equasion. Could you please help me ?<img src="https://tex.z-dn.net/?f=y%20%3D%204%20x%5E%7B2%7D%20%2B3x%2B5
SOVA2 [1]
Hope I helped you. You didn't even asked any question.

3 0
3 years ago
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