So to find the discriminant of a quadratic equation, the formula is b² - 4ac with a = x² coefficient, b = x coefficient, and c = constant. In this case, our equation is 
Firstly, solve the multiplications and the exponents: 
Next, subtract and we find that our discriminant is 0.
*Additional Info: Since the discriminant is zero, this means that this quadratic equation has 1 real solution.
Hello, scatterplots are made of bivariate data. <span>With bivariate data, we have </span>two<span> sets of related data we want to </span><span>compare.</span>
So with bivariate data, we are interested in comparing the two sets of data and finding any relationships.
Hope this helps! :-)
Answer:
(C)Stefano should have divided by 6 when finding the mean absolute deviation.
Step-by-step explanation:
Step 1: Find the mean.

Step 2: Find each absolute deviation.
10, 18, 10, 18, 2, 2
Step 3: Find the mean absolute deviation.

However, there are 6 values in the data. Stefano should have divided by 6 when finding the mean absolute deviation.
The correct mean absolute deviation is therefore:

i know the answer it's the first one
on the left