Mathematics High School

how do I solve this complex expression-
(5+2i)+(6i^2-3i+2)

Answers

Answer 1

Answer:

1-i

Step-by-step explanation:

Hello,

you know that [tex]i^2=-1[/tex], right?

so

[tex](5+2i)+(6i^2-3i+2)\\\\=5+2i-6-3i+2\\ \\=1-i[/tex]

Thanks

Related Questions

Two years ago, Rita was three times older than Cheryl. In 3 years, Rita will be twice older than Cheryl. How old are the girls now?

Answers

Answer:

Cheryl's age = x = 7 years

Rita's age = y = 17 years

Step-by-step explanation:

Let

Cheryl's age = x

Rita's age = y

Two years ago, Rita was three times older than Cheryl

(y - 2) = 3(x - 2)

y - 2 = 3x - 6

y = 3x - 6 + 2

= 3x - 4

y = 3x - 4

In 3 years, Rita will be twice older than Cheryl

(y + 3) = 2(x + 3)

y + 3 = 2x + 6

y = 2x + 6 - 3

= 2x + 3

y = 2x + 3

Equate both equations

3x - 4 = 2x + 3

Collect like terms

3x - 2x = 3 + 4

x = 7 years

Substitute x = 7 into

y = 2x + 3

= 2(7) + 3

= 14 + 3

= 17

y = 17 years

Cheryl's age = x = 7 years

Rita's age = y = 17 years

Find m<1 and m<2. Justify your answer.

Answers

Answer:

M<1 80 by the corresponding angles postulate

Step-by-step explanation:

whats the answer please help

Answers

Answer:

The answer is 1,200 in. tall

Step-by-step explanation:

Because you just need to multiply length times width so the length would be 40 in. and width would be 30 in. so 40 x 30=    1,200 in.

Which statement describes the mapping? A. The mapping represents y as a function of x, because each y-value corresponds to exactly one x-value. B. The mapping does not represent y as a function of x, because two of the x-values correspond to the same y-value. C. The mapping represents y as a function of x, because each x-value corresponds to exactly one y-value. D. The mapping does not represent y as a function of x, because there are more x-values than different corresponding y-values.

Answers

Answer:

The answer is

C. The mapping represents y as a function of x, because each x-value corresponds to exactly one y-value.

Step-by-step explanation:

In mathematics, mapping is used synonymously to a function, and a function is basically a relation between two values or expressions say y and x

like the difference equation relating y and x.

In a function, for every value of x plugged into the function there is always a corresponding value of y.

Example.

Given the function

y=2x+5.

find the value of y when x=0

we are going to substitute x=0 and solve

y=2(0)+5

y=5

so for x=0 y=5

I’m so confused can anyone help?

Answers

15 I got your back bro

Answer:

Step-by-step explanation:

The answer is 15.

1/5 is 10

1/2 is 25

25+10=35

50-35 is 15, your answer. Hope this helped :)

Find f(3).

f(x) = x2 + 5x - 9
A) 7
B) 10
C) 9
D) 15

Answers

Answer:

f(3) = 15. Correct: D)

Explanation:

Numeric Value of a Function

The value of a function f(x) when x = a is calculated by replacing the x for a. We have the function:

[tex]f(x)=x^2+5x-9[/tex]

It is required to find f(3), or the numeric value of f when x=3. Replace x for 3

[tex]f(3)=3^2+5(3)-9[/tex]

[tex]f(3)=9+15-9[/tex]

[tex]f(3)=15[/tex]

A) Incorrect. f(3) is not 7

B) Incorrect. f(3) is not 10

C) Incorrect. f(3) is not 9

D) Correct. f(3) =15 as found above.

Diana is selling cucumbers from her backyard garden. Her garden is 42 square feet in total and she can grow 1 cucumber every 72 square inches. If she can successfully grow cucumbers in every square foot of the garden and sell them for $2.50 each, how much money will she make?

Answers

Answer:

she will make $120 from the cucumbers

HELP ME ? HEHEHE HEHEHEHEHEHEHEHEH HELPPP MEEE

Answers

Anwser is -6 brianliest is appreciated

Answer:

Your answer is -6 just count down with negatives

The length of a rectangle is 6 feet and the width is 3 feet. Find the perimeter
of the rectangle.

Answers

Answer:

18

Step-by-step explanation:

6+6+3+3

6+6+6

18

Round 345.273 to the nearest hundredth.

Answers

Answer:

345.270

Step-by-step explanation:

i think that's right

Answer:

Step-by-step explanation:

underline the hundreth and then look at the place next to it and then if it is 5 or more then go to the next hundredth if it's less than 5 than the number stays the same

3/8+2/5 what is the answer

Answers

Answer:

31/40

Step-by-step explanation:

7th grade math help me pleasee

Answers

Answer:

-4, -25, -1, -2.5

Answer:

B , C , G ,H

Step-by-step explanation:

Just to clarify Integers are whole numbers that are both negative and positive

fractions and decimals are not integers  

Brainiest would be appreciated

High Hopes^^

Barry-

Which figure has an order 3 rotational symmetry

Answers

Answer:

Equilateral triangle

Equilateral triangle has an order 3 rotational symmetry. In geometry, a figure has rotational symmetry if it moves onto itself under rotation about an angle at center of rotation.

Step-by-step explanation:

Equilateral triangle has an order 3 rotational symmetry. In geometry, a figure has rotational symmetry if it moves onto itself under rotation about an angle at center of rotation.  Hope this helps! :)

Answer:

Equilateral triangle on EDG

Step-by-step explanation:

he table shows the number of minutes Jalen talks on his mobile phone and the cost of the phone calls.

Jalen’s Mobile Phone Cost
Number of minutes, x
150
220
250
275
Cost, y
$7.50
$11.00
$12.50
$13.75

If the cost varies directly with the number of minutes Jalen talks on the phone, which equation represents the variation?
y = 0.05 x
y = 20 x
y = 157.5 x
y = 1125 x

I ask so many questions but I'm not tryna fail yah feel me?

Answers

Answer:

y=0.5x

Step-by-step explanation:

i took the test on edg

Michelle invests $15,000 in a partnership that has four other partners.The total investment of all partners is $ 240,000. What percent of the business does Michelle own?​

Answers

6.25% is the answer hope this helps

Michelle owns about 6.25% of the total investment.

What is the percentage?

The Percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.

Given that Michelle invests $15,000 in a partnership that has four other partners. The total investment of all partners is $240,000.

The percentage of investment will be calculated as below:-

Percentage = ( 15000 / 240000 ) x 100 %

Percentage = 00625 x 100%

Percentage = 6.25%

Therefore, Michelle owns about 6.25% of the total investment.

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Victoria and her friends are going to the skateboard shop to pickup some equipment. They buy two new skateboards for $87.98 each, 3 pairs of kneepads for $14.57 each, and 4 helmets for $21.24 each. What is their total cost? (hint: don't forget the $) * 50 points

Answers

Answer:

$304.63

Step-by-step explanation:

From the information provided, the total cost can be calculated by multiplying the price of each item for the amount purchased and adding up the results:

Total cost=($87.98*2)+($14.57*3)+($21.24*4)

Total cost=$175.96+$43.71+$84.96

Total cost= $304.63

According to this, the answer is that their total cost is $304.63.

What is the value of b in this diagam?
A.12
B. 10.2
C.9
D.8

Answers

Answer:

We can't tell because we can't see the diagram.

Step-by-step explanation:

Could you link the diagram?

Answer:

Answers is D 8

Step-by-step explanation:

2y - 6 = -6x, solve for y (must be in form y = mx + b)

Answers

Answer:

y=-3x+3

Step-by-step explanation:

hope this helps :)

please help I need an answer ASAP pleae

Answers

Answer:

1=8 2=11/12

Step-by-step explanation:

Help me pls dodkrkkdiodod

Answers

Answer:

2 with an exponent of 6,

Example: 2x2x2x2x2x2

The exponent is just the number multiplied that many times to itself

Step-by-step explanation:

Example: 2x2x2x2x2x2 =

2x2=4x2=8x2=16 and so on

Hope this helped!

Answer:

i73489013848eirrlgdjfknkln cklvnbklncb nclxnklzndlgkfnxdknsklnlzndjsknjkdnfksnznfjnzjkfnnzknlnkznskdnzjksnvnv

Step-by-step explanation:

tablespoon(Tbs.)
divided by 2 =

Answers

Answer:

3 teaspoons

Step-by-step explanation:

Answer:

3 tbs

Step-by-step explanation:

what is the value for x in the form of p
does 4(px+1)=64

Answers

Step-by-step explanation:

4(px + 1) = 64

Step 1: Add -4 to both sides.

4px + 4 -4 = 64 + -4

4px = 60

Step 2: Divide both sides by 4p.

4px = 60

4p 4p

x = 15

p

can someone help me to solve 3/4÷1/2=​

Answers

Answer:

3/4 ÷ 1/2 is one and one half or 3/2

Answer:

1.5 or 1 1/2

Step-by-step explanation:

3/4 divided by 1/2 is simply a reverse order of multiplication.

As you see if you swap the 1 and 2 in one half you get 2 over 1.

This changes the division sign to a multiplication sign.

Thus then you can multiply 3/4 by 2 to get 6/4.

6/4 then can be simplified as 1 and 1/2 or 1.5.

Plz help me I had to put it was math Bc there is no science option plz help me thank you.

Answers

Answer:

  see the attached

Step-by-step explanation:

To fill in the data table, you need information about the layers of the Earth. That information is provided in the second attachment.

Among other things, it shows the density of the rock layers varies over a range of almost 6 to 1 from the top layer to the inner core. Your representative liquids vary in density over a range of about 1.8 to 1, so clearly cannot match the relative densities.

In the attached spreadsheet, we have used the average of the top and bottom density values for each layer to represent the density of the layer. Then we did a linear mapping so that the minimum density maps to lamp oil, and the maximum density maps to honey. (You get slightly different results if you use a different mapping strategy.)

For your convenience in stacking your "density cylinder", we have shown the relative thickness of each of the layers as a percentage of the overall radius of the Earth. That is, if your cylinder is 100 mL deep, for example, then the top layer will be 0.5 mL deep, the next layer 11.3 mL deep, and so on.

__

We have elected not to use alcohol for the top layer, because it is miscible with all of the liquids immediately below that in the table. That is, you could not maintain alcohol as a separate layer in your cylinder because it would dissolve into the layer below. It might take a little effort (or care) to keep the lamp oil separated from the vegetable oil, as we expect those might try to mix, as well.

If you compare the scaled density values with the values for the "representative" liquids we have chosen, you will see that some are closer than others. The idea is to try to get the best match, while also choosing liquids that don't mix well.

Are 2x^3y & 2xy^2 like terms

Answers

Answer:

No

Step-by-step explanation:

Let's define our 2 terms first.

2x³y

2xy²

We see here that one term has a x³y and the other has a xy² term. Since they are not the same, the 2 terms are not like terms.

12/55 × 15/16 Give your answer as a fraction in its simplest form.

Answers

Answer:

9/44

Step-by-step explanation:

12 * 15

55  16

12 * 15 = 180

55 * 16 = 880

180

880

/2

90

440

/2

45

220

/5

9

44

I hope the best for you and your assignment but this is what I got.

Tina won a prize of £1000 000 She spent £40 000 on a new car Then she spent half the money left on a house How much did Tina spend on the house?

Answers

Answer:

480,000

Step-by-step explanation:

1,000,000 - 40,000 = 960,000

960,000 divided by 2 is 480,000

Answer:the answer is

Step-by-step explanation:

List all the factors of 33 from least to greatest. Enter your answer below,
using a comma to separate each factor.
Answer here

Answers

Answer:

1,3,11,33

Step-by-step explanation:

33 can be divided by itself, 11,3 and 1 without leaving a remainder.

The factors of 33 from least to greatest is 1, 3, 11, 33.

The factors of 33 are the numbers that, when multiplied by another number, result in 33.

The factors of 33 are:

33 = 1 x 33

33 = 3 x 11

So, the factors are:

1, 3, 11, 33

Now, the least factor is 1 and Greatest factor is 33.

Thus, the factors of 33 from least to greatest is 1, 3, 11, 33.

Learn more about Factor here:

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whats 2 -89

so ihave to write 20 characters to asks omething so

Answers

2 subtracted by 89 is 87

Given f (x)= 5 (2 - x), what is the value of f(-6)

Answers

Answer:

f(-6)=40

Step-by-step explanation:

f(x)=5(2-x)

f(x)=10-5x

f(-6)=10-5*(-6)

f(-6)=10+30

f(-6)=40

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