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ivann1987 [24]
1 year ago
6

20. Find the solution to the system of linear equations below:

Mathematics
1 answer:
Luden [163]1 year ago
3 0

Answer:

The last option

Step-by-step explanation:

When you plug in 1 for the x and 2 for y, the answer is -5 for the first equation and is 12 for the second equation. I hope that helps!

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Calculate for the mean/ average of the given numbers:
 
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Then, we calculate for the summation of the squares of differences of these numbers from the mean, S
 
                             S  = (1 - 3)² + (2 - 3)² + (3 - 3)² + (4 - 3)² + (5 - 3)²
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Divide this summation by the number of items and take the square root of the result to get the standard deviation.

                              SD = sqrt (10 / 5) = sqrt 2  
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Thus, the standard deviation of the given is equal to 1.41. 
              
                            
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