Question

Find the absolute value of the complex number 5 - 4i.

Answer 1

I answered a similar question for someone else. The absolute value of a complex number is called the modulus. This represents the DISTANCE to the origin from the point on the imaginary + real plane. 
the real horizontal distance is 5 and the imaginary vertical distance is in this case 4 (from -4i) the distance is 4. So to figure out this just use the Pythagorean theorem.
5^2 + (4)^2 = c^2 
25 +16 = c^2 
c^2 = 41c = 6.4 So option D.

Answer 2

Answer:

The person above me is correct give him brainliest plz you can't give brainliest entail there are two answers.

Step-by-step explanation:

the answer is (D)

                       hope you give brainliest to the person above me :)