What is I² in math?

Answers

Answer 1

In mathematics the expression of refers to or has a value equal to -1

We are going to define complex numbers, since "i" is a letter that denotes that it is an imaginary number.

What are Complex numbers?

Complex numbers are known as imaginary numbers and can be defined as an extension of the set of real numbers, since in its structure it has a real number followed by an imaginary number denoted with the letter "i".

The value of "i" starts from the square root of (-1)

√(-1) = i

Then if we want to know the value of i squared we do the following:

√(-1) = i

[√(-1)]² = i²

(-1) = i²

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Related Questions

Brian invests £990 into his bank account. He receives 2.6% per year simple interest. How much will Brian have after 3 years? Give your answer to the nearest penny where appropriate.

Answers

Answer:

£1067.22

Step-by-step explanation:

A = P(1 + rt)

A = £990(1 + 0.026*3)

A = £1067.22

Mark brainliest if this helped!

Mark brainliest if this helped!

please please help it's timed!
determine the value of y, if x is 7.
[tex]y=x^2-1[/tex]

Answers

Answer:

y = 48

Step-by-step explanation:

Plug in 7 for x:

y = x² - 1

y = (7)² - 1

Simplify. Remember to follow the order of operations, PEMDAS.

PEMDAS stands for:

Parenthesis

Exponents (& roots)

Multiplication

Division

Addition

Subtraction

~

First, solve the power, then subtract:

y = (7)² - 1

y = (7 * 7) - 1

y = (49) - 1

y = 48

48 is your value for y.

~

Riley invested $5,100 in an account paying an interest rate of 7\tfrac{3}{4}7 4 3 ​ % compounded quarterly. Ryan invested $5,100 in an account paying an interest rate of 7\tfrac{1}{4}7 4 1 ​ % compounded daily. After 7 years, how much more money would Riley have in her account than Ryan, to the nearest dollar?

Answers

Answer: 257

257 in delta math

Step-by-step explanation:

After 7 years, Riley would $441.5 more have in her account than Ryan.

What is compound interest?

Compound interest is the interest calculated on the principal and the interest accumulated over the previous period.

Given that Riley invested $5,100 in an account paying an interest rate of [tex]7\tfrac{3}{4}[/tex]% compounded quarterly. Ryan invested $5,100 in an account paying an interest rate of [tex]7\tfrac{1}{4}[/tex] % compounded daily, we need to find that after 7 years how much more money would Riley have in her account than Ryan,

[tex]A = P(1+r/n)^{nt[/tex]

Where A = amount

P = principal

r = rate

n = number of times the amount is compounded and t = time

Riley = compounded quarterly,

[tex]A = P (1 + r / 4)^{4t[/tex]

[tex]A = 5100(1+0.019375)^{4(7)}\\\\A = 5100(1.019375)^{28}\\\\\\[/tex]

[tex]A = 8728.13[/tex]

Therefore, in 7 years Riley has $8728.13.

Ryan = compounded daily,

[tex]A = P (1 + r / 365)^{365t[/tex]

[tex]A = 5100(1 + 0.00019)^{356(7)}\\\\A = 5100(1.00019)^{2555}\\\\A = 8286.64[/tex]

Therefore, in 7 years Ryan has $8286.64.

Riley will have $441.5 more.

Hence after 7 years, Riley would $441.5 more have in her account than Ryan.

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someone please help me out on this problem

Answers

Answer:

[tex]x^{2}[/tex]+[tex]y^{2}[/tex]=9

Step-by-step explanation:

the equation for graphed circles centered at (0, 0) is

[tex]x^{2}[/tex]+[tex]y^{2}[/tex]=[tex]r^{2}[/tex]

and 3 is r (the radius)

khan academy - 6th grade advanced

Answers

Answer:

its b

Step-by-step explanation:

Pls help me, and do not send links. Thanks

Answers

i uploaded a vid on this here

https://www.you tube.com/watch?v=dQw4w9WgXcQ

I need help on this now. Please.

Answers

Answer:

science is the answer

Step-by-step explanation:

becuse

Answer:

She answered fastest in social studies.

Step-by-step explanation:

Hope that helps

The point (3,2) reflected in the x-axis is (
,
).


Question 2
b. Reflect (3,2) in the y-axis.

The point (3,2) reflected in the y-axis is (
,
).

Answers

Answer:

the answers below:

1: (3,-2)

2: ( -3,2)

i need help asap pls and no links

Answers

Answer:

D

Step-by-step explanation:

I took chemistry so I know

Use the quadratic formula to find both solutions to the quadratic equation
given below.
3x2 - 5x + 1 = 0
ILL MAKE YOU BRAINLEST JUST HELP

Answers

Answer:

i only know one answer which is d

Step-by-step explanation:

Answer:

Step-by-step explanation:

i think b and d

find the slope-intercept equation of the line that passes through (-7,2) and had a slope of 0

Answers

Answer: Y=0x+b

Step-by-step explanation:

Y=mx+b is what we need to set it to.

Since we already know the slope, we can go ahead and find the y-intercept to complete the equation

(-7,2), here -7 is the x and 2 is the y value

y=mx+b

plug all the known information now and solve for b (y-intercept)

y is 2, m (slope) is 0, x is -7

2=0(-7)+b

2=0+b

2=b

y=0x+2 or simply y=2

Answer:

y = 2

Step-by-step explanation:

The line is a horizontal line thru (-7, 2)

Equation:  y = 2

find the measure of each interior angle of a regular polygon with the following number of sides 10​

Answers

Answer:

36 will be the measure.

Hope it helps!!!

Step-by-step explanation:

Expand and simplify 4(2x+3)-(5x-1)

Answers

1. 4(2+3)−1(5-1)
8+12−1(5−1)
2. 8+12−1(5−1)
8x+12-5x+1
3. 8x+12-5x+1
8x+13-5x
4. 8x+13-5x
answer: 3x+13

Match each value to the correct expression.

Answers

Answer:

1. 27

2. 27

3. 15

Step-by-step explanation:

The solution of the the given three expressions are 27, 22, and 15, respectively.

What is PEMDAS?

PEMDAS is an acronym that refers to the sequence of operations to be employed when solving equations with multiple operations. PEMDAS is an acronym that stands for P-Parenthesis, E-Exponents, M-Multiplication, D-Division, A-Addition, and S-Subtraction.

The given mathematical expressions can be solved as shown below.

1 + 5 · 2 + (1 + 3)²

Step1: Solving Parenthesis first,

= 1 + 5 · 2 + (4)²

Step2: Exponents,

= 1 + 5 · 2 + 16

Step3: Multiplication,

= 1 + 10 + 16

Step4: Addition,

= 27

4 + 8[(1/4) + 2]

Step1: Parenthesis

= 4 + 8(2.25)

Step2: Multiplication,

= 4 + 18

Step3: Addition,

= 22

0.25 · 4³ - 1

Step1: Exponents,

= 0.25 · 64 - 1

Step2: Multiplication,

= 16 - 1

Step3: Subtraction,

= 15

Hence, the solution of the the given three expressions are 27, 22, and 15, respectively.

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Help me solve this pls!!

5+ 8 x-3=

Answers

it should be -19...!

Which table has a constant of proportionality between y and 2 of 0.6?
Choose 1 answer:


Answers

The answer is B. If you divide y by x such as (2.4/4) you get 0.6 and so on.

8 2/3 + (-2 1/12)=
what would that be

Answers

Answer:

307/12

(Decimal: 25.583333)

Step-by-step explanation:

Heart if this helped

Find the surface area of a square pyramid with side length 6 yd and slant height 6 yd.

Answers

Answer:36

Step-by-step explanation:

.

Find the perimeter of a room with a length of 28 ft. and a width of 19 ft.

Answers

Answer:

98 ft

Step-by-step explanation:

28x2 + 19x2

=98

Answer:

Is the room a rectangle size? If so:

28 + 28 = 56

19 + 19 = 38

56 + 38 = 94 ft.

Opposite sides are parallel and equal:

therefore whenever there is two given lengths make sure to multiply them two times then add them together if only its a rectangle.

if its a square make sure to multiply the given length 4 times.

describe the correlation in the scatterplot below
The first bubble options are positive linear, positive linear with one outlier, negative linear, negative linear with one outlier, nonlinear ,and no.


the second bubble options are decrease , increase, show no pattern and follow a linear pattern ​

Answers

Answer:

'no' and 'show no pattern'

Step-by-step explanation:

with scatter plots like these, there is no exact information at all, what so ever

Answer:

linear positive/ follow a linear pattern

Step-by-step explanation:

NEED HELP PLEASE. NO LINKS OR U WILL B REPORTED. WILL GIVE POINTS AND THE BRAINLIEST. THANKS!!

In a robotics competition, a robot must be built with a specific
maximum starting height, width, and depth. In order to meet the
height requirements, a robot must fit in the judge's plexi-glass box.
The box is a rectangular prism that has a surface area of 1 728 in”, a
width of 15 inches, and a length of 18 inches. The Mad Hatter robot
is 17.75 inches tall in its starting position. Does the Mad Hatter
meet the height requirement?

Answers

L = 18, W = 15 and H = ?
2*(15+18) + 2*(15H) + 2*(18H) = 540 + 30H + 36H
1,728 - 540 = 66H
1,188/66 = H = 18
so yes, it meets the height requirement 17.75 is less than 18

radius of a cone with a volume of 100.48 yds3 and a height of 6 yds

Answers

Answer:

r = 4

Step-by-step explanation:

Volume of a cone:

V = πr²(h/3)

Given:

V = 100.48

h = 6

π = 3.14

Work:

V = πr²(h/3)

100.48 = r²(3.14)(6/3)

100.48 = r²(3.14)(2)

100.48 = r²6.28

r² = 100.48/6.28

r² = 16

[tex]\sqrt{r^2} =\sqrt{16}[/tex]

r = 4

PLZZ HELPPPP?!?!?!??!?!?

Answers

Answer:

B

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

What’s the diameter of a circle that had a radius of 4cm

Answers

Answer:

8

Step-by-step explanation:

Answer is =8cm

Step-by-step explanation:

d=2r=2·4=8cm

What is the length of AB⎯⎯⎯⎯⎯? Enter your answer as a decimal in the box. Round only your final answer to the nearest tenth. cm A horizontally-aligned scalene triangle A B C. Side A C is labeled as 18 centimeters. Side B C is labeled as 12 centimeters. Angle C is labeled as 79 degrees.

Answers

Answer:

AB = 19.6 cm

Step-by-step explanation:

Let AB be represented by c. Applying the cosine rule, we have;

[tex]c^{2}[/tex] = [tex]a ^{2}[/tex] + [tex]b^{2}[/tex] - 2ab Cos C

  = [tex]12^{2}[/tex] + [tex]18^{2}[/tex] - 2(12 x 18) Cos [tex]79^{o}[/tex]

  = 144 + 324 -432(0.19081)

  = 468 - 82.4299

[tex]c^{2}[/tex] = 385.5701

c = [tex]\sqrt{385.5701}[/tex]

c = 19.6359

The side AB of the given triangle is 19.6 centimetres.

Answer:

19.6

Step-by-step explanation:

took the quiz. Shows correct

Find the measure of the angle indicated

Answers

72⁰

HOPE IT HELPS YOU THANK YOU ☺

Answer:

37 degree

Step-by-step explanation:

RQS is suspened by arcRS

RQS=1/2(RS)

RQS=1/2(74)

RQS=37

Which is NOT true? 5 + 14 = 20 - 1 9 + 5 = 7 + 7 15 = 4 + 11 15 - 9 = 9 - 4

Answers

Answer:

5+14=20 is not true

Step-by-step explanation:

5+14=19 not 20

Answer:

5+14=20 is not true

Step-by-step explanation:

5+14=20 is not true

find the missing number in each below

1. (8+9)+10=8+(_+10)
2. 46+(_+4)=46+4)+50
3. 2,345=1900+_145
4. 12x(8+_)=12x8+12x2
5. 4x9=12x_=36
6. (8x5)x3=8x(5x_)

pasagot po plss​

Answers

9
50
445?
2
3
I think these are correct

7/15 multiplied by 5/6

Answers

Answer:

The answer will be 35/36

Answer:

[tex]\frac{7}{18}[/tex]

Step-by-step explanation:

[tex]\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}[/tex]

A line passes through the points (-1, 4) and (3, -8). A second line passes through
(-1,8) and (2, 11).
A) Write the equation of each line. Show all work.

Answers

Answer:

y = -3x + 1,  y = x + 9

Step-by-step explanation:

An equation consists of a slope and the y-intercept. To find the slope, you need to plug the values into the slope formula.

y2 - y1/ x2 - x1

= -8 - 4/ 3 - (-1)

= -12/ 4

= -3

The slope of the first line is -3.

To find the y-intercept, you need to plug in either one of the coordinates into the equation, y = -3x + b

-8 = -3(3) + b

-8 = -9 + b

1 = b

The equation, for the first one, is y = -3x + 1  

Line 2:

11 - 8/ 2 - (-1)

= 1

y = 1x + b

11 = 1(2) + b

11 = 2 + b

9 = b

y = x + 9

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