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Yuliya22 [10]
3 years ago
5

Which of the following is the conjugate of a complex number with 2 as the real part and −8 as the imaginary part?

Mathematics
2 answers:
vampirchik [111]3 years ago
3 0
The complex number is given as: 2-8i

So for conjugate, you just flip the sign of the imaginary part:

2+8i will be the answer
ser-zykov [4K]3 years ago
3 0
<h2>Answer:</h2>

The conjugate of the given complex number is:

                        2+8i

<h2>Step-by-step explanation:</h2>

We know that any complex number is written in the form of:

            z=a+ib

where a and b are real numbers.

The conjugate of the complex number is given by:

              \bar z=\bar {a+ib}\\\\i.e.\\\\\bar z=a-ib

Here we are given that:

We have a complex number such that the  real part of a complex number is 2 and it's imaginary part is -8.

i.e.

a=2 and b= -8

i.e. the complex number is:

z=2+(-8)i

Hence, the conjugate of this number is:

\bar z=2-(-8)i\\\\i.e.\\\\\bar z=2+8i

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german
8 pigs x 4 legs each = 32. so you need 2 ducks to give you 10 animals total. So 32 + 2 ducks with 2 legs = 36.

There are 8 pigs and 2 ducks.
7 0
3 years ago
Lainey bought a set of 20 markers for $6 dollar sign, 6. What is the cost of 1 marker?
marin [14]
Hello!

To find the price of one marker you divide the price paid by the amount of markers bought

6 / 20 = 0.30

A marker cost $0.30

The answer is $0.30

Hope this helps!
5 0
3 years ago
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What numbers multiply to 0.32 and also add to 1.2
mylen [45]
.08 x .04 is the right answer

6 0
3 years ago
1+1 =? P.S free give away
Lina20 [59]

Answer:

2

Step-by-step explanation:

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4 0
3 years ago
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The length of a photograph is 1 cm less than twice the width. The area is 91cm^2. find the width and length.
maksim [4K]

Answer:

Width=6.5 cm

Length=12 cm

Step-by-step explanation:

Step 1: Express the lengths and widths

Width=w

Length=l, but 1 cm less than twice the width=(2×w)-1=2 w-1

Step 2: Solve for the length and width

A=L×W

where;

A=area of the photograph

L=length of the photograph

W=width of the photograph

In our case;

A=91 cm²

L=2 w-1

W=w

91=(2 w-1)w

2 w²-w=91

2 w²-w-91=0, is a quadratic equation

solve for w

w={-1±√(-1²-4×2×-91)}/(2×2)

w=(-1±27)/4

w=(27-1)/4=6.5, or (-1-27)/4=-8

Take w=6.5 cm

L=(2×6.5)-1=13-1=12 cm

Width=6.5 cm

Length=12 cm

6 0
3 years ago
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