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dexar [7]
2 years ago
7

Which expression is equivalent to 9x2-2y+3x2-3y?

Mathematics
2 answers:
serious [3.7K]2 years ago
6 0

Answer:

the third option is the answer if you simplify

Harman [31]2 years ago
6 0
Answer:

Third option

Step-by-step explanation:

9x^2 - 2y + 3x^2 - 3y

Combine like terms

9x^2 + 3x^2 = 12x^2
•••••••••••••••••••••••••••
12x^2 - 2y - 3y or 12x^2 - 5y
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The fraction by which the variance of the dependent variable is greater than the variance of the errors is known as R-squared. The correct option is C, 0.32.

<h3>What is R- Squared?</h3>

The fraction by which the variance of the dependent variable is greater than the variance of the errors is known as R-squared.

It is called so because it is the square of the correlation between the dependent and independent variables, which is commonly denoted by “r” in a simple regression model.

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