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Marina86 [1]
3 years ago
12

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

Mathematics
2 answers:
Damm [24]3 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]3 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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Answer:

B

Step-by-step explanation:

4 0
3 years ago
Help! The most helpful answer will be marked as BRAINLIEST!
lawyer [7]

Answer:

Step-by-step explanation:

16=5p-6

17=y

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3 years ago
Rachel purchased a prepaid phone card for $30. Long distance calls cost 6 cents a minute using this card. Rachel used her card o
Amiraneli [1.4K]

Answer: her call lasted for 26 minutes.

Step-by-step explanation:

Let x represent the number of minutes for which her call lasted.

Rachel purchased a prepaid phone card for $30. Long distance calls cost 6 cents a minute using this card. Converting 6 cents to dollars, it becomes 6/100 = $0.06

This means that the cost of x minutes of long distance call is

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If the remaining credit on her card is $28.44, it means that

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0.06x = 30 - 28.44

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8 0
3 years ago
Find the area of the isosceles triangle. please help thanks
fiasKO [112]

Answer:

1080 m^2 Don't submit m^2 in your answer.

Step-by-step explanation:

Givens

The catch is to find h

To do that, use a^2 + b^2 = c^2

a b and c are in the same 1/2 triangle.

a = 48/2 = 24 m

b = h = ?

c = 51 meters

Solution

a^2 + b^2 = 51^2                      Substitute for b^2 = h^2

24^2 + h^2 = 51^2                   Expand 24^2 and 51^2

576 + h^2 = 2601                    Subtract 576 from both sides

h^2 = 2601 - 576

h^2 = 2025                              Take the square root of both sides

h = 45

Area

Area = 1/2 b * h

Area = 1/2 48 * 45

Area = 1080

Remark

Notice that to find h you only use 1/2 of 48 because that is the base of the right triangle.

To find the area, you need to use all of 48 because 48 is the full length of the base.

5 0
3 years ago
The table to the right displays the weight progress of a
Vikki [24]

Answer:

The answer is 6 pounds.

Step-by-step explanation:

I figured it out by getting it wrong

7 0
4 years ago
Read 2 more answers
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