Use factoring to simplify the expression x^2-x-6/x-3 assume that x does not equal 3

1 answer:

3 0

This works out beautifully. You COULD use long division here, but since your numerator is a quadratic, your first instinct should be to try and factor it. If you factor it, it works out to be (x - 3)(x + 2). Now it just so happens that when you do that, the (x - 3) in the numerator will cancel with the (x - 3) in the denominator leaving you with one sad and lonely (x + 2) as your answer.

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Eliosa determined that the correlation coefficient of the data set -0.7. What percent of the total variation in the y-values is

Anon25 [30]

Answer:

51% of the variation in Y is not explained by the regression line.

Step-by-step explanation:

To find the amount of variation not explained by the regression equation (how you found the correlation coefficient), we need to find <em>R. </em>We already have r ...

So to find R from r ( the correlation coefficient ) we just square it.

r² = .7² = .49

Then we just subtract that number from 1 to get the amount of <em>variation that is </em>not explained - which is ... .49 - 1 = .51 (convert to percent) = 51%

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4 years ago

What integer divided by nine is negative eight?

Law Incorporation [45]

Answer:

It would be - 72

Step-by-step explanation:

It is because assume the integer as 'a'.

Given, a/9 = -8

That is a = -8 * 9 => -72

4 0

3 years ago