are complex numbers considered real numbers?

on this assignment, it's asking me to select which expressions simplify to a real number. some of them (which i already selected) simplify to real numbers but some of the others simplify to a complex number like (3 + i)(i - 4) = -13 - i. can -13 - i be considered a real number or no because it's complex?

Answers

Answer 1

Answer:yes they are considered real numbers

Step-by-step explanation:


Related Questions

Alex has 64 cubes with dimensions in feet (ft), like the one shown. He uses all the cubes to fill a box shaped like a larger rectangular prism. There are no gaps between the cubes. Part B: If there are 64 of these cubes in the larger prism, then what is the volume, in cubic feet, of the larger rectangular prism?

Answers

Answer:

The volume, in cubic feet, of the larger rectangular prism is 64 cubic feet

Step-by-step explanation:

Length of small cube =[tex]\frac{1}{2} ft[/tex]

Volume of each cube = Side^3

Volume of each cube =[tex](\frac{1}{2})^3[/tex]

                                    =[tex]\frac{1}{8} ft^3[/tex]

Volume of 64 cubes = [tex]64 \times \frac{1}{8}[/tex]

Volume of 64 cubes [tex]= 8 ft^3[/tex]

We are given that He uses all the cubes to fill a box shaped like a larger rectangular prism.

So, Volume of 64 cubes = Volume of rectangular prism

So, If there are 64 of these cubes in the larger prism, then the volume, in cubic feet, of the larger rectangular prism is 64 cubic feet

An electronics store is selling car chargers for cell phones. The expense function is E = - 300p + 13, 000 and the revenue function is R = - 32p ^ 2 + 1, 200p. What would that maximum revenue be?

Answers

Answer:

Wala akong pake kasi ndi naman ako marunong sa math

What is the value of x?
70°
12x + 14

Answers

Answer:

[tex] \frac{14 }{3} [/tex]

Step-by-step explanation:

12x=70-14=56

x=

[tex] \frac{56}{12} = \frac{14}{3} [/tex]

what are the next 2 sequences to 5, 1, 6, 7, 13, 21, 34,

Answers

Answer:

55,89

Step-by-step explanation:

Here we see a sequence where the pattern is achieved by adding each new term to the term before to get the next term

5+1=6

1+6=7

6+7=13 etc

So for the next two terms: 21+34=55

55+34=89

Answer:

5, 1, 6, 7, 13, 21, 34, 51, 77

Solution:

Next possible number in the given sequence I. -4,1,8 is 17

Next possible number in the given sequence II. 5,6,13 is 26

☆ The next 2 number for given series -4,5,1,6,8,13 are 17,26

☆The next 2 number for given series 5,1,6,7,13,21,34 are 51,77

What’s 4(60+78)-9, I need help, I’m having a brain fart

Answers

Answer:

543

Step-by-step explanation:

4(138)-9

552-9

543

Answer:

543

Step-by-step explanation:

based on PEMDAS

paranthesis first 60+78= 138

then you would multiply 4x138=552

then you would 552-9= 543

i'm confused with this who knows about this?​

Answers

Answer:

its C :)

Step-by-step explanation:

At the beginning of the year, John had $40 in savings and saved an additional $13 each week thereafter. Isaac started the year with $80 and saved $9 every week. Let J represent the amount of money John has saved tt weeks after the beginning of the year and let I represent the amount of money Isaac has saved t weeks after the beginning of the year. Write an equation for each situation, in terms of t, and determine the number of weeks after the beginning of the year until John and Isaac have the same amount of money saved.

Answers

john- 40+t13= j
isaac- 80+t9=i
They would have the same amount of money after 10 weeks
john- 40+(10•13)= 170
isaac- 80+(10•9)= 170

evaluate −5x+8 when x=3.

Answers

Answer:

-7

Step-by-step explanation:

-5(3) +8

-15+8

7

Answer:

plug x in

-5 (3) + 8

-15 + 8

-7

Step-by-step explanation:

M= 1/2
M= 2
M= -1/2
M=-2

Answers

Answer:

It should be 1/2

Step-by-step explanation:

the slope is =1/2 so the first option

Find the perimeter of the polygon with the vertices Q( – 3, 2), R(1, 2), S(1, - 2), and T (-3, -2).
, -2)

Answers

Answer:

Step-by-step explanation:

Find the sale price of the item. Round to two decimal places if necessary.


Original price: $76.00

Markdown: 33%


The sale price is $ .


PLZ ANSWER ASAP!

Answers

25.08 I think
I divided 76.00 by 33
$50.92 would be the sale price of the item

fat help me fast help

Answers

false because the mountain was created with the North not the South plate.

I am in need of help with line and angle proofs.​

Answers

I can help you, just let me know

What is the equation of the following graph

Answers

Answer:

Undefined

Step-by-step explanation:

Which graph represents all the solutions of the inequality 10n+3>8n+7?

Answers

Answer:

what graphs are you talking about

Step-by-step explanation:

what is this answer ​

Answers

Answer:

a

Step-by-step explanation:

the unit rate is 10 whcih is higher then everyone elses

3x
__ +2= 4x-1
4

PLZ HELP ME OMG

Answers

well if youre trying to simplify it then the answer would be x=12/13 or in decimal form 0.923076

The product Of (x-1) And A Rational Expression Is 1. Find The Rational Expression

Answers

Answer:

[tex]\frac{1}{x-1}[/tex]

Step-by-step explanation:

(x - 1) × [tex]\frac{1}{x-1}[/tex] ( cancel the factor (x - 1) on numerator and denominator

= 1

[ In the same way 2 × [tex]\frac{1}{2}[/tex] = 1 ]

The required rational expression is [tex]\frac{1}{x-1}[/tex]

Solve for p in the literal equation 5p + 6r = q.

Answers

Answer:

p = q /2 − 5 r /2

Answer:

5p+6r=q, move the variable 6r to the right which makes it a negative.
5p=q-6r, divide both sides by 5.
p=1/5q-6/5r should be your answer

write an equation that is parallel to the equation (-3,-5) and (1,7) and goes through the point (2,4)

Answers

You didn't give an original equation, just the two points so I'm just going to go ahead and assume that b = 0, but in reality, it doesn't really matter what it equals I think.

Slope intercept form:

First, we find the slope, so we do y1-y2/x1-x2 which is 3. So then we do y=mx+b so 4=3(2)+b. Then we do 4=6+b. So, b = -2.

So the equation is y=3x-2

Find the slope which we already know. Plug into y-y1=m(x-x1).

y-4=3(x-2)

y-4=3x+6

Which of the statements is also true in Spherical geometry?

Answers

I think all of them are true

please help important!!!!!!!!!!!!!

Answers

Answer:

the answer is B!! hopefully this helps

Brian, Chris, and Damien took a math test that had 20 questions. The number of questions Brian got right is 14 more than the number of questions Chris got right. Damien correctly answered 2 less than the number of questions Chris answered correctly. If Brian and Damien have the same score, which statement is true?

Answers

Answer:

C. Brian and Damien both answered 2 more questions correctly than Chris did.

Step-by-step explanation:

A. Brian and Damien both answered 2 fewer questions correctly than Chris did.

B. Brian and Damien both answered 4 more questions correctly than Chris did.

C. Brian and Damien both answered 2 more questions correctly than Chris did.

D. Brian and Damien both answered 4 fewer questions correctly than Chris did.

Let

B = number of questions Brian got right

C = number of questions Chris got right

D = number of questions Damien got right

The number of questions Brian got right is 14 more than 1/4 the number of questions Chris got right.

B = 14 + (1/4) * C

Damien correctly answered 2 less than 5/4 the number of questions Chris answered correctly.

D = (5/4) C - 2

If Brian and Damien have the same score,

14 + (1/4) * C = (5/4) C - 2

14 + 1/4C = 5/4C - 2

14 + 2 = 5/4C - 1/4C

16 = 5C-C/4

16 = 4/4C

C = 16

B = 14 + (1/4) * C

= 14 + 1/4*16

= 14 + 4

= 18

D = (5/4) C - 2

= 5/4*16 - 2

= 5*4 - 2

= 20 - 2

= 18

Your family needs a set of 4 tires. Which of the following deals would you prefer? Complete the explanation below to tell which deal(s) would be better.

(I) Buy 2, get two free (II) 45% off (III) 1/2off
The best deal would be either .
Either case would result in a discount of %,
which is better than the other alternative of %.
PLZ ANSWER ASAP!

Answers

Answer

Buy 2, get 2 free and/or 1/2 off

Step-by-step explanation:

OK, lets say that the tire price was 15. (l)= 15+15=30 (ll)= 15/45%= 33.33x4=133.32 (lll)= 15/2=7.5   7.5x4=30

what is the slope of (2,-2) and (5, -6) ?

Answers

Answer:

-4/3

Step-by-step explanation:

Answer:

m = - 4 /3

Step-by-step explanation:

Slope is essentially change in height over change in horizontal distance, and is often referred to as "rise over run." It has applications in gradients in geography as well as civil engineering, such as the building of roads. In the case of a road the "rise" is the change in altitude, while the "run" is the difference in distance between two fixed points, as long as the distance for the measurement is not large enough that the earth's curvature should be considered as a factor. The slope is represented mathematically as:

m = y2 - y1 / x2 - x1

m =( -6) - (-2)/ 5 - 2

m = -6 plus 2 / 3               I put plus because negative times negative is plus

m = -4 / 3        negative 6 plus 2 is -4

To find y2, y1, x2 and x1 you have look on the two points that they gave you.

(2, -2), The x1 is 2 and y1 is -2

(5,-6), The x2 is 5 and y2 is -6

Which of the following expressions is equivalent to x - 9 - 3x + 2y + 3 – 2?

A.4x + 2y + 14
B.3x + 2y + 1
C. X-9
D.2x + 2y - 8

Answers

it is D because

-3x + x = 2x

2y

3 - 9 - 2 = -8

2x +2y -8

so it’s D

guys hurry i have a starter
idk what the answer

Answers

Answer:

The letter E

HOPE THIS HELPS YOU Do mark as brainliest

By definition, what is the number i equal to?

Answers

Unit Imaginary Number

The square root of minus one √(−1) is the "unit" Imaginary Number, the equivalent of 1 for Real Numbers. In mathematics the symbol for √(−1) is i for imaginary.

What is the area of the triangle?

Answers

Answer:

108

Step-by-step explanation:

base times hight i think its been a while since i looked at the area of a triangle

Answer:

The area is 54 units^2

Step-by-step explanation:

The area equation of a triangle is (base x height)/2

So I plugged in the numbers into the equation

(6 x 18 ) / 2

(108)/2

54 units^2

16
Which of the following expressions are equivalent to 25 -
5
? Select all that apply.
1 16
25 5
(25x16)
5
(25x5)
16
125
16
0 0 0
1
25
х
5
16

Answers

Answer:

1,16, that is the answers

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