Find the difference of the complex numbers.
(2 +8i)-(-5 - 3i)

Answers

Answer 1

Answer:

7 + 11i

Step-by-step explanation:

Simplify: (2 +8i)-(-5 - 3i) = 2 + 8i + 5 + 3i  

Add real numbers to real numbers and imaginary to imaginary: 2 + 8i + 5 + 3i = 7 + 11i

Answer 2

A complex number can be shown as a pair of integers (a, b). The difference of the complex number (2 +8i)-(-5 - 3i) is 7+11i.

What is a complex number?

A complex number can be shown as a pair of integers (a, b) forming a vector on an Argand diagram, which represents the complex plane.

The difference of the complex number can be done as following,

(2+8i)-(-5-3i)

= 2 + 8i + 5 + 3i

= 5+2 + 8i+3i

= 7 + 11i

Hence, the difference of the complex number (2 +8i)-(-5 - 3i) is 7+11i.

Learn more about Complex Number:

https://brainly.com/question/10251853

#SPJ2


Related Questions

36abc + 54ad = ? im struggling with math

Answers

Answer:

18a(2bc+3d)

Step-by-step explanation:

36abc + 54ad = ?

Rewrite as ;

=2*18abc+3*18ad

Factor out common term 18a

18a(2bc+3d)

I HOPE THIS HELPED!!!

During a basketball game, Bari scored 28 points. During the game, Danay scored ¼ of the number of points Bari scored. How many points did Denay score during the basketball game?

Answers

Para calcular isto, temos que dividir 28 por 4, que dá 7. Neste contexto, 7 é 1/4 de 28, o número de pontos marcad .

Resposta: Denay marcou 7 pontos durante o jogo.

factor: 18x²+39y-15=0 ​

Answers

Answer: x = 6

y= 6x2/13 + 5/13

Step-by-step explanation: to solve for and y: Isolate the variable by dividing each side by factors that don't contain the variable

Proving That All Circles Are Similar give: cicrcle x with radius r and circile y with radius s prove: circle x is similar to circle y

Answers

Answer:

Two shapes are similar when they have the same shape while their sizes may be the same or different

Therefore, two similar shapes are shapes that have a relationship such that the dimensions of one of the shapes can be obtained from the dimensions of the other shape by multiplying by a scale factor

All circles have the same shape and are defined by their center and radius

Given circle with center at 'x' and radius 'r' and circle with center 'y' and radius 's', then there exist a scale factor a = s/r such that we have;

r × a = s

Where a = s/r, we get;

r × s/r = s

We can therefore, obtain a circle with with the same size as the circle with center 'y' and radius 's' by multiplying the radius of the circle with center at 'x' and radius 'r' by a

Therefore the circle with center at 'x' and radius 'r' is similar to the circle with center 'y' and radius 's'

Step-by-step explanation:

Just did it! <3

Hope this helps!

A rectangle is 12 cm long and 8 cm broad.
The length and breadth of the rectangle are
both increased by the same amount, dcm.
If the area of the rectangle is now 221 cm,
find the value of d. with a digram​

Answers

Answer:

17

Step-by-step explanation:

because 17 is the mulitple

Fill in the blank. Two chords that are the same distance from the center of a circle must be
A. perpendicular
B. parallel
C. radii
D. congruent​

Answers

Answer:congruent

Step-by-step explanation:

Scott's window store made a mosaic for the community center. The mosaic had an 8 × 8 array of different color square tiles. If each tile is 2 2/3 ft long, what is the area of the whole mosaic?

Answers

Answer:

455.1111 feet²

Step-by-step explanation:

Given that :

Array of mosaic = 8 * 8 color square tiles

Length of each tile = 2 2/3 feets long

The length of mosaic = length per tile * Number of array :

2 2/3 feets * 8 = 21.3333 feets

This corresponds to the side length of the mosaic

The Area of the whole mosaic:

Using the area of square formula = s²

Where, s = side length

s = 21.33333 ft²

s² = 21.33333²

s² = 455.1111²

Preform the indicated operation. Be sure the answer is reduced.

Answers

The answer is the last one
2x+1
——-
X-8

Answer:

D. [tex]\frac{2x+1}{x-8}[/tex]

Step-by-step explanation:

[tex]\frac{x+1}{x-8} - \frac{x}{8-x} = \\\\\frac{x+1 + x}{x-8} = \\\\\frac{x+1}{x-8} +\frac{x}{x-8} =\\\\\frac{x+1+x}{x-8} =\\\\\frac{2x+1}{x-8}[/tex]

Correct choice is D

Unit 8: Right Triangles & Trigonometry
Homework 2: Special Right Triangles
please help pt2 :]

Answers

question what unit/ grade math is this?

Anju had 3 (3 / 4) cup of sugar . She used 1 (2 / 3 )cup of sugar to bake a cake . How mush sugar does anju have lift ?

Answers

Answer:

[tex]y=\frac{1}{12} cup\ of\ suger[/tex]

Step-by-step explanation:

From the question we are told that:

Sample size [tex]n=3(3/4)=9/12[/tex]

Amount used [tex]x=1(2/3)=2/3[/tex]

 

Generally the equation for sugar lift [tex]y[/tex] is given as is mathematically given by

 [tex]y=n-x[/tex]

 [tex]y=\frac{9}{12} -\frac{2}{3}[/tex]

 [tex]y=\frac{1}{12}[/tex]

PLEASE HELP WITH THIS IF I DONR GET IT RIGHT I WILL FAIL I WILL GIVE BRAINLIEST AND CORRECT ANSWE ONLY

Answers

Answer:

A= 21 m

Step-by-step explanation:

Is this right?
Any links get reported!

Answers

Answer:

yes

Step-by-step explanation:

12/99=121212, so yes

12/100= 0.12, nope

12/90=0.13131, nope

4/33=0.121212, so yes

3/25=0.12, nope

4/30=0.131313, so nope

in conclusion, you are correct

Yes this is correct!

What is the likelihood that a point chosen inside the square will also be inside the circle ?It Chose one : A. is impossible ,B. it is unlikely, C it is likely D. it is certain

Answers

Answer:

C. It is likely

Step-by-step explanation:

Given

See attachment for diagram

For the square.

Let

[tex]Length = L[/tex]

So, the area is:

[tex]Area = Length^2[/tex]

[tex]A_1=L^2[/tex]

The side length of the square equals the diameter of the circle.

So:

[tex]diameter (d) = L[/tex]

The radius is:

[tex]r = \frac{1}{2}d[/tex]

[tex]r = \frac{1}{2}L[/tex]

The area is:

[tex]Area = \pi r^2[/tex]

[tex]A_2 = \pi * (\frac{1}{2}L)^2[/tex]

[tex]A_2 = \pi * \frac{1}{4}L^2[/tex]

[tex]A_2 = \frac{22}{7} * \frac{1}{4}L^2[/tex]

[tex]A_2 = \frac{22}{28} L^2[/tex]

The likelihood that a point will be common to the square and the circle is:

[tex]Pr = \frac{A_2}{A_1}[/tex]

[tex]Pr = \frac{\frac{22}{28} L^2}{L^2}[/tex]

[tex]Pr = \frac{22}{28}[/tex]

[tex]Pr = 78.57\%[/tex]

The above probability is greater than 50% but less than 100%.

Hence, it is likely

Answer:

C. Likely

Step-by-step explanation:

all the points are in the circle so it's likely to choose a point inside the circle

Find the area of a circle that has a diameter of 11 inches. Approximate r as 3.14. Round your answer to the nearest
hundredth.
חו
A=
in?

Answers

Answer:

94.985in^2

Step-by-step explanation:

Given data

Diameter= 11inches

Radius = 5.5 in i.e 11/2= 5.5inches

The  Area of a circle is given as

Area= πr^2

Substitute

Area= 3.14*5.5^2

Area= 3.14*30.25

Area= 94.985 in^2

Hence the area is 94.985in^2

The answer is 94.985in^2

rounded to neaarest hundreth 94.99in^2

Reference angle of 2/15 pi

Answers

Answer:

Add  

2

π

to  

15

π

2

.

15

π

2

+

2

π

The resulting angle of  

11

π

2

is coterminal with  

15

π

2

but isn't positive. Repeat the step.

11

π

2

Add  

2

π

to  

11

π

2

.

11

π

2

+

2

π

The resulting angle of  

7

π

2

is coterminal with  

15

π

2

but isn't positive. Repeat the step.

7

π

2

Add  

2

π

to  

7

π

2

.

7

π

2

+

2

π

The resulting angle of  

3

π

2

is coterminal with  

15

π

2

but isn't positive. Repeat the step.

3

π

2

Add  

2

π

to  

3

π

2

.

3

π

2

+

2

π

The resulting angle of  

π

2

is positive and coterminal with  

15

π

2

.

π

2

Step-by-step explanation:

zorry if im wrong

im highly confused .. please help .. i will mark brainliest!

Answers

Answer:

22/7*1.5 square

=7.1 meter square

Answer:

Don’t Be Worried!

the formula Is A=πr2

The answer will be last option

Step-by-step explanation:

I hope you are staying safe!

The school buses at a middle school each hold 38 students. The school has, b, buses.
Write an equation that shows the total number of students, s, that can be carried by all of its buses.

Answers

Answer:

38bs

Step-by-step explanation:

multiply the number of students that each bus can hold by the no of buses 38s×b=38bs

Which of the following equations has the steepest slope?
a) y= 2/3 x+ 4
b) y = 2/5 x + 2
c) y = 3/2 x + 5
d) y = 1/2 x + 1

Answers

D.................................

Determine whether the three side lengths form a triangle. 3,5,7

Answers

Yes. Because the sum of the two small numbers are bigger than the longest side.

3+5 >7

help me plssssssssssssss

Answers

Answer:

Step-by-step explanation:

Do you need help with all of the questions? Sorry I thought this was the comment box.

Jeans cost $38. The tax is 8% what is the total cost?

Reporting if wrong, please explain.’

Answers

Answer:

$41.04

Step-by-step explanation:

8% = 0.08

38(0.08) = 3.04

$3.04 is the tax for the jeans. Now we just have to add it to the price.

38 + 3.04 = $41.04

Answer:

$41.04

Step-by-step explanation:

0.08 (the tax converted from percentage) x 38 (initial cost) = 3.04(tax amount)

38(initial amount) + tax amount (3.04) = 41.04

the cost after tax is $41.04

understand now? To convert 8% to a decimal just move the decimal to the left twice (because we’re representing out of 100%)

Can somebody help meeeeeeeewe

Answers

Answer:

12.5

Step-by-step explanation:

43 ¾ ÷ 3½ = 12.5

glad to help

Pls help 10 points pls!

Answers

50 & 52 make the statement true

A kite was was broken into two triangles. What is the height, h, one of the triangles?

A) 4 ft
B) 8 ft
C) 7 ft
D) 14 ft

Answers

I think the answer is A) 4ft

When you look at the picture the the width is 8 ft divided that by 2 since it is broken into two triangle to get the answer 4

Answer:

4

Step-by-step explanation:

took test on edge :D

can somebody find the volume of the cone on #2?
thank you!!

Answers

Answer:

[tex] 4,220.16 \: {units}^{3} [/tex]

Step-by-step explanation:

Diameter of cone = 24 units

Radius of cone (r) = 24/2 = 12 units

Height of cone (h) = 28 units

[tex]V_{cone} = \frac{1}{3} \pi {r}^{2}h \\ \\ = \frac{1}{ 3} \times 3.14 \times {(12)}^{2} \times 28 \\ \\ = \frac{1}{3} \times 3.14 \times 144 \times 28 \\ \\ = 3.14 \times 1,344 \\ \\ = 4,220.16\: {units}^{3} [/tex]

(HELP MEH FOR BRAINLY! ITS ONLY MULTIPLE CHOICE YALL)

Answers

Answer:

option (1)

Step-by-step explanation:

f(x) - g(x)

= 5x² - 2x + 7 - (- 2x² + 6x + 3) ← distribute parenthesis

= 5x² - 2x + 7 + 2x² - 6x - 3 ← collect like terms

= 7x² - 8x + 4

HELPPPPP MEE ITS DUE TODAY pleasseee​

Answers

Angle 2 is 74, angle 1 is 47 ( since vertical angles are congruent), and angle 3 is 69.

I NEED HELP. What is the answer?

Answers

Answer:

B

Step-by-step explanation:

Here’s what B has:

Min: 24

Q1: 27

Median: 31

Q3: 33

Max: 34

Although Choice A and B were really close with their five number summaries, out of the two of them, only B had a maximum value of 34, like the one in the box plot shown above.

Ishmael's stock went up $17 on Thursday and then down $13 on Friday. What was the total change in the value of the stock?.

Answers

Answer:is that subtraction?

Step-by-step explanation:

Help please! All guesses get reported! Answer gets brainliest!

Answers

Answer:

A - 36 in.

b - 8

Step-by-step explanation:

A - You marked all of it right! 10 + 10 + 10 + 6

B - The teeth are only on half of the circle that hit the chain. 10 inches of chain for the big wheel, so 1/2 of 10 is 5. Same thing for the little wheel, 1/2 of 6 is 3, and 5+3 = 8, so about 8!

A: 36 in
b: 8
uhm yea so they can get brainliest

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