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2 years ago

8. Find the values of angles x, y,

Mathematics

2 answers:

Eddi Din [679]2 years ago

8 0

Answer:

option A

Step-by-step explanation:

option A is the correct answer of this question.

plz mark my answer as brainlist plzzzz.

hope this will be helpful to you 

timofeeve [1]2 years ago

7 0

60 + 40 + x = 180

100 + x = 180

x = 180-100

x = 80°

Z + 60 = 90

Z = 90-60

Z = 30°

Y + Z + 20 = 180

Y + 30 + 20 = 180

Y + 50 = 180

Y = 180-50

Y = 130°

I think the options are incorrect

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Step-by-step explanation:

The general form of the linear regression equation is:

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x = independent variable = homework grade

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$a=\frac{\sum Y\cdot \sum X^{2}-\sum X\cdot\sum XY}{n\cdot \sum X^{2}-(\sum X)^{2}}\\\\=\frac{(592\times 44909)-(591\times45227)}{(8\times44909)-(591)^{2}}\\\\=-14.316$ $b=\frac{n\cdot \sum XY-\sum X\cdot\sum Y}{n\cdot \sum X^{2}-(\sum X)^{2}}\\\\=\frac{(8\times 45227)-(591\592)}{(8\times44909)-(591)^{2}}\\\\=1.195$

The linear regression equation that represents the set of data is:

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