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Mekhanik [1.2K]
3 years ago
12

Write the following

Mathematics
2 answers:
liraira [26]3 years ago
5 0

Answer:

B 4,047,063

Step-by-step explanation:

4,000,000 + 40,000 + 7,000 + 60 + 3

Standard form is written with them written as one number.  Add them together

4,000,000

+  40,000

   + 7,000

        + 60

          + 3

------------------

4,047,063

posledela3 years ago
3 0

Step-by-step explanation:

it would be B

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Assume that you have paired values consisting of heights​ (in inches) and weights​ (in lb) from 40 randomly selected men. The li
HACTEHA [7]

Answer:

R^2 = r^2 = 0.445^2= 0.198

B. The coefficient of determination is 0.1980, 19.8​% of the variation is explained by the linear​ correlation, and 80.2​% is explained by other factors.

Step-by-step explanation:

Previous concepts

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.  

Solution to the problem

In order to calculate the correlation coefficient we can use this formula:  

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

On this case we got that r =0.445

The determinaton coefficient is just:

R^2 = r^2 = 0.445^2= 0.198

And we can put it on % and we got 19.8%. And represent the variation explained by a linear model. The best option on this case would be:

B. The coefficient of determination is 0.1980, 19.8​% of the variation is explained by the linear​ correlation, and 80.2​% is explained by other factors.

Since the explained variation is 19.8% and the remain 100-19.8= 80.2% is explained by other factors.

6 0
2 years ago
Ellie ran 4x + 5 miles today and 3x – 2 miles
kompoz [17]

Answer:

4

Step-by-step explanation:

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7x+3=31

7x=28

x=4

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Answer:

her total profit is 3

Step-by-step explanation:

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Hey there,

So when finding the perimeter, we do addition.

So . . .

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Your correct answer would be 76

Hope this helps.
~Jurgen

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sergejj [24]

Well, (m^2-7m-11) ÷ (m-8) = m+1 with a remainder of -3

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3 years ago
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