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Mademuasel [1]
2 years ago
9

Show that f(2-3i) is a real number

Mathematics
1 answer:
densk [106]2 years ago
7 0

Answer:

2 - 3i

is 2 - the square root of -9

2 -√-9

2 + √9

2 + 3 = 5

<em><u>Thank you (I dont know if these answers are  100% correct but I tried my best!)</u></em>

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Rewrite each sum as a product of the Gcf of the addends and another number. 15+45
morpeh [17]
15 + 45

GCF = 15

15/15 = 1
45/15 = 3

(15 * 1) + (15 * 3) = 
15(1 + 3) <===
8 0
3 years ago
What is the solution of the system? Use the elimination method.
Bogdan [553]
(7,6) is the answer of your question....
8 0
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Area of the triangle defined by the coordinates (-3, -4), (-7, 0), and (-3, 4).
qwelly [4]
Here: (Aₓ, Ay) = (-3,-4), (Bₓ, By) = (-7,0), (Cₓ, Cy) = (-3, 4)
Now, Formula of area of triangle is:

area = [Aₓ(By - Cy) + Bₓ(Cy - Ay) + Cₓ(Ay - By)] / 2

Substitute the values in to the expression, 
area = [-3(0-4) - 7(-4-(-4)) - 3(-4-0)] / 2
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area = 24 / 2
area = 12

Final answer would be 12 units.

Hope this helps!
5 0
3 years ago
How many positive integer factors of 100! are multiples of 2 or 3?
elena-s [515]

Positive integer factors of 100:

1, 2, 4, 5, 10, 20, 25, 50, 100

Now find if they are a multiple of 2 or 3.

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That is 6 factors.

3 0
3 years ago
Segment AB is completely rotated about the y-axis to form a 3-D figure. Find the volume of the figure. The
Lady bird [3.3K]

Answer:

The volume of the figure is 905 cubic units.

Step-by-step explanation:

Rotation is a method of solid transformation which involve turning a given line, or object about a reference point. In the given question, rotating segment AB completely about the y-axis would form a 3 dimensional figure of a sphere.

volume of a sphere = \frac{4}{3}\pir^{3}

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Given that AB = 6, then the radius of the sphere = 6

volume of sphere = \frac{4}{3} x \frac{22}{7} x (6)^{3}

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                              = 905.14

volume of sphere = 905 cubic units

The volume of the figure is 905 cubic units.

3 0
2 years ago
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