The correct answer is number one
Answer:
x is equal to -21
Step-by-step explanation:
-21+4=-17
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)
Answer:
5.34
Step-by-step explanation:
x = 8.9 X 0.6
x = 5.34
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