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Dima020 [189]
3 years ago
14

What are the characteristics of a complex number? What is the relationship between a complex number and its conjugate? Describe

the usefulness of the conjugate and its effect on other complex numbers.
Mathematics
1 answer:
Dafna11 [192]3 years ago
6 0
Complex number will have :

- A real part
- an imaginary part

The conjugate of a complex number is simply the complex number with the imaginary part of the opposite sign

One of the usefulness of the conjugate is when you have a complex number in the denominator and you are trying to get rid of it

hope this helps
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A pedestal for a statue is made with 405 cubic feet of concrete.
Pavlova-9 [17]

Answer:

45 square feet

Step-by-step explanation:

we know that

The volume of the pedestal (rectangular prism) is given by the formula

V=Bh

where

B is the area of the rectangular base of pedestal

we have

V=405\ ft^3\\h=9\ ft

substitute the given values in the formula and solve for B

405=B(9)

B=405/9\\B=45\ ft^2

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Describe the faces, edges, verticals of each three dimensional figure. Then identify it.
EastWind [94]

When you have to describe a 3D shape you have to keep the following definitions in mind:

<em>1. The face of a 3D shape is a flat surface.</em>

The shape on the picture has 3 rectangular faces and 2 triangular faces, a total of 5 faces.

<em />

<em>2. The edge is where two faces meet.</em>

For the shape on the picture, there are 3 edges, where the rectangular faces meet each other, and then three edges where the rectangular faces meet each of the triangular faces, this shape has a total of 9 edges.

<em>3. The vertex is a corner, where the edges meet.</em>

There are three vertices on each end of the shape, so it has a total of 6 vertices.

A shape that has 5 faces, 9 edges, and 6 vertices is a triangular prism.

6 0
1 year ago
Solve for x or find x ​
ratelena [41]

the answer is x= 4

AB and CD are the same length

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8x=32

x=4

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3 years ago
I'm in 8th grade I need help with this question plz help me. Screen Shot 2021-01-29 at 1.10.42 PM
shtirl [24]
Yeah sure, but i need to see the picture to get your answer
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3 years ago
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Please someone help me with maths​
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Answer:

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<em>e</em><em>)</em><em>=</em><em> </em><em>6x</em><em>+</em><em>9</em>

<em>f</em><em>)</em><em>=</em><em> </em><em>4xy-4y</em><em>^</em><em>2</em><em>+</em><em>8y</em>

<em>g</em><em>)</em><em>=</em><em> </em><em>-12y</em><em>^</em><em>2</em><em>+</em><em>10y</em>

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