The ratio 12:20 because you need it to be equal to 3:5. 3 times 4 which makes 12 so you need to multiply 5 with 4 too
Answer:

Step-by-step explanation:
Given
The x and y values
Required
The regression line equation
Because of the length of the given data, I will run the analysis using online tools, then analyze the result.
From the analysis, we have:


--- Sum of squares
--- Sum of products
The regression equation is calculated as:

Where:

So, we have:




So:
becomes

Answer:
a. 0.25
Step-by-step explanation:
The given expression is

Factor the denominator using difference of two squares.

Cancel out common factors;

We plug in 2 to get


Answer:
Simplify 2x - 4) + 7(x + 2).
9x + 6
9x - 4
09x - 6
= 9x+10