The answer to the question is 21/3
X = {3.898979486, -5.898979486}
x = {3.9 x -5.9}
Aec= 40
Explanation because it’s a 90 degree angle and dea = 50
So 90-50=40
Plea give me Brainiest
Answer: LAST OPTION
Step-by-step explanation:
The complex numbers shown have the form:

By definition, the distance can the distance of the complex number from the origin on the complex plane can be calculated with the formula shown below:

Substitute values of each option. Then:
1) 
2) 
3) 
4)
(CORRECT OPTION)