2 out of 5 chance that you will attests get 3
Answer: y = 3.5 x+ 43.8
Step-by-step explanation:
Here x represents the number of years after 1990
Thus, we get the table that is used to find the equation will be,
x 0 2 4 6 8
y 45 51 57 61 75
Let the equation that shows the above data,
y = b + a x ---------(1)
![\text{Where, }a=\frac{\sum y \sum x^2-\sum x \sum xy}{n(\sum x^2)-(\sum x)^2}](https://tex.z-dn.net/?f=%5Ctext%7BWhere%2C%20%7Da%3D%5Cfrac%7B%5Csum%20y%20%5Csum%20x%5E2-%5Csum%20x%20%5Csum%20xy%7D%7Bn%28%5Csum%20x%5E2%29-%28%5Csum%20x%29%5E2%7D)
![\text{And, }b = \frac{\sum xy - \sum x\sum y}{n\sum x^2 - (\sum x)^2}](https://tex.z-dn.net/?f=%5Ctext%7BAnd%2C%20%7Db%20%3D%20%5Cfrac%7B%5Csum%20xy%20-%20%5Csum%20x%5Csum%20y%7D%7Bn%5Csum%20x%5E2%20-%20%28%5Csum%20x%29%5E2%7D)
By the above table,
![\sum x = 20](https://tex.z-dn.net/?f=%5Csum%20x%20%3D%2020)
![\sum xy = 1296](https://tex.z-dn.net/?f=%5Csum%20xy%20%3D%201296)
![\sum x^2 = 120](https://tex.z-dn.net/?f=%5Csum%20x%5E2%20%3D%20120)
![\sum y = 289](https://tex.z-dn.net/?f=%5Csum%20y%20%3D%20289)
By substituting these values in the above value of a and b,
We get b = 43.8 and a = 3.5
Substitute this value in equation (1)
we get, the equation that shows the given data is,
y = 3.5 x + 43.8
⇒ Option (3) is correct.
The answer is 14 because a negative number multiplied by another negative number is positive. So (-7)*(-2) is 14.
<h2><u><em>Divide and subtract from both sides</em></u></h2>
Answer:
4
Step-by-step explanation:
Because if you have 2 apples and add 2 apples to that, you'll have a total of 4.