victoriadflores30 victoriadflores30

06-02-2020
Mathematics

contestada

Which of the following is a complex number?
-7
2 + StartRoot 3 EndRoot
4 + 9i
Pi

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marcthemathtutor marcthemathtutor

06-02-2020

Answer:

4 + 9i

Step-by-step explanation:

a complex number by definition must have a real and imaginary components

imaginary components are denoted by the letter i, where i = √(-1)

the only choice with a real and imaginary components is 4 + 9i

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