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2 years ago

12

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

2 answers:

Damm [24]2 years ago

8 0

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.

balu736 [363]2 years ago

7 0

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 :)

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Step-by-step explanation:

Given

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2 years ago

What is the length of segment AE?

nexus9112 [7]

Answer:

$AE=\frac{50}{3}\ units$

Step-by-step explanation:

step 1

In the right triangle ABC

Applying the Pythagoras Theorem fin the hypotenuse AC

$AC^{2} =AB^{2}+BC^{2}$

substitute

$AC^{2} =6^{2}+8^{2}$

$AC^{2} =100$

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step 2

we know that

If two figures are similar, then the ratio of its corresponding sides is equal

so

$\frac{AB}{CD}=\frac{AC}{CE}$

substitute and solve for CE

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step 3

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2 years ago

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1 year ago