I have that same question and don’t know how to do it
Answer:

Step-by-step explanation:
The quadratic can be solved in a straightforward way:

This tells you that the solutions are ...
2i or -2i
__
For each root of "a", (x -a) is a factor. Thus the factors of the equation are ...
(x +2i)(x -2i)
Answer:
Answer: Option d. 36,108 is the correct answer.
Step-by-step explanation:
In this question we have given a sequence of four terms and we know the first and last term.
Now we have to calculate the ratio of the terms so that we can complete the sequence.
We know the formula of the sequence A(n) = 
Now we know A(4)=324
A(1) = 12
n = 4
So we the values in the formula
324 = 
324 = 

![r=\sqrt[3]{27}](https://tex.z-dn.net/?f=r%3D%5Csqrt%5B3%5D%7B27%7D)
r = 3
So the sequence will be 12,36,108,324
Mean:
Add all the numbers:
13 + 17 + 15 + 18 + 21 + 13 + 20 + = 16.7
16.7 + 3.7 = 20.4
Mean = 20.4
Median:
Order the numbers:
13, 13, 15, 17, 18, 20, 21
The median, or middle number is 17.
17 + 3.7 = 20.7
Median = 20.7
Mode:
The number that repeats the most is 13.
13 + 3.7 = 16.7
Mode = 16.7
Range:
Highest Number = 21
Lowest Number = 13
21 - 13 = 8
Range = 8
The answer choice that matches is choice A.
Hope this helped☺☺
Answer:
C. (-7, -15)
Step-by-step explanation:
Both the x- and the y-coordinates of a point in the third quadrant are negative. The given point C. (-7, -15) is the only one of the four choices that satisfies this criterion.