Mathematics High School

Simplify this expression below as much as possible.
(7+4i)+(9+5i)-(2+5i)

Answers

Answer 1

Answer:

7+4i+9+5i-2-5i

7+4i+9-2

4i+7+9-2

4i+14

Answer 2

Answer: 14 + 4i

Step-by-step explanation:

(7 + 4i) + (9 + 5i) - (2 + 5i)

Group the real part and the imaginary part of the complex number

(a + bi) ± (c + di) = (a ± c) + (b ± d)i

(7 + 9 - 2) + (4 + 5 - 5)i

7+9-2=14 and 4+5-5=4

Therefore, (7+4i)+(9+5i)-(2+5i) is equal to 14 + 4i

Simplify This Expression Below As Much As Possible. (7+4i)+(9+5i)-(2+5i)

Related Questions

A person invested \$150$150 in an account growing at a rate allowing the money to double every 13 years. How much money would be in the account after 22 years, to the nearest dollar?

Answers

Answer:

Amount after 22 year = $484.80 (Approx.)

Step-by-step explanation:

Given:

Amount deposit in bank = $150

Double in year = 13 year

Find:

Amount after 22 year

Computation:

A = P[1+r]ⁿ

Amount after 13 year = 2 x 150

Amount after 13 year = $300

300 = 150[1+r]¹³

2 = [1+r]¹³

Rate of interest = 5.477%

Amount after 22 year

A = P[1+r]ⁿ

Amount after 22 year = 150[1+5.477%]²²

Amount after 22 year = $484.80 (Approx.)

Help me plzzzzzzzzzzzz

Answers

Looking at the triangle we see the angles:

58, x

We also see a right angle, therefore you now have:

90, 58, 0

All three angles of a triangle should have a total of 180 degrees, so we add the known angles and subtract the total from 180.

90 + 58 = 148

180 - 148 = 32

Therefore, x = 32 or C

find the answer, 1/2 divided by 4

Answers

Answer:

The answer would be 0.125, Hope this helped!

Find the sum of the zeros in the following equation: (2x-1)(x+8)(2x-4)(x-1)

Answers

Answer:

[tex]-9\frac{1}{2}[/tex]

Step-by-step explanation:

[tex]2x+1=0[/tex]

[tex]2x=-1[/tex]

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

[tex]x+8=0[/tex]

[tex]x=-8[/tex]

[tex]2x-4=0[/tex]

[tex]2x=4[/tex]

[tex]x=2[/tex]

[tex]x-1=0[/tex]

[tex]x=1[/tex]

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

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

[tex]=-9\frac{1}{2}[/tex]

Sum of fractions [tex]=-9\frac{1}{2}[/tex]

Please help i like really need it

Answers

Yup the like is right I just looked and it was right

Students did push-ups for a fitness test. Their goal was 20 push-ups. For each student,
determine what percentage of the goal they achieved.
1. Elena did 16 push-ups.
2. Jada did 42 push-ups.
3. Lin did 13 push-ups.
4. Andre did 21 push-ups.

Answers

Answer:

1- 80%

2- 210%

3- 65%

4- 105%

Step-by-step explanation:

The percentage of the goal achieved by them:

1). 80%

2). 210%

3). 65%

4). 105%

Find the percentage

1). Goal of push-ups = 20

No. of push-ups done by Elena = 16

Percentage = 16/20 × 100

= 80%

2). Goal of push-ups = 20

No. of push-ups done by Jada = 42

Percentage = 42/20 × 100

= 210%

3). Goal of push-ups = 20

No. of push-ups done by Lin = 13

Percentage = 13/20 × 100

= 65%

4). Goal of push-ups = 20

No. of push-ups done by Andre = 21

Percentage = 21/20 × 100

= 105%

Thus, the above answers are correct.

Learn more about "Percentage" here:

brainly.com/question/26080842

will mark brainliest pls help

Answers

Answer:

0.0063

Step-by-step explanation:

Consider the four equations below. Is there one equation that you think doesn't
belong with the others? (Factoring each might help)

Answers

x2-1 does not belong

Ricardo made a data table with 4 rows and 10 columns. He colors 3/8 of the cells yellow. What number of cells are yellow?

Answers

Answer:

15

Step-by-step explanation:

Ricardo made a data table with 4 rows and 10columns

Total number of cells is

= 4×10

= 40

He colors 3/8 of the cells yellow

Therefore the number of cells in yellow can be calculated as follows

= 3/8 × 40

= 15

Hence 15 cells were painted yellow


Find the missing number to complete the linear equation that gives the rule for this table
This is 7th grade accelerated math
Pls help ASAP this is due soon

Answers

Answer:

Y=25x

Step-by-step explanation:

Cross multiply

75/3=25

50/2=25

25/1=25

Ans: 25

Answer:

y= 25x.

Step-by-step explanation:

This is direct variation because y/x = 25/1 = 50/2 = 75/3 = 25 , and when x = 0 y = 0.

So the equation is y = 25x.

2098320984029840294098-029382098442019832 divided by 9

Answers

Answer:

2.3314351132×[tex]10^{20}[/tex]

Step-by-step explanation:

2098320984029840294098 - 029382098442019832 = 2.0982916019×[tex]10^{21}[/tex]

2.0982916019×[tex]10^{21}[/tex]/9 = 2.3314351132×[tex]10^{20}[/tex]

(The / means division btw)

PLEASE HELP ME! NO LINKS!

Answers

Answer: Keenan can paint 35 pictures with the remaining paint!

Will mark Brainliest! You MUST explain step-by-step how you solved the problem.

Answers

Answer:

choice C) 30 ft

Step-by-step explanation:

tan 41° = height/34

0.8693 = height/34

height = 29.56 or rounded to 30 ft

(21 - 5) divided by 8

Answers

Answer:

2

Step-by-step explanation:

This is simply order of operations.

so, according to that, we do the parentheses first, and then divide.

21-5=16

16/8

2

does anyone know this??

Answers

Answer:

30 Degrees

Step-by-step explanation:

all triangles are 180 degrees, therefore 180-130-20=30

:)

It’s 30 degrees, because 130+20= 150 degrees and 180-150= 30 degrees.

what is 4+4? what is the answer to this equation

Answers

Answer:

4 + 4 = 8

Step-by-step explanation:

help me plssss plsss lol

Answers

Answer:

i have no idea but i just want to wish you the BEST of luck!

Step-by-step explanation:

Answer:

x^2 - 4x + 4

Step-by-step explanation:

4 + - 4x + x^2

youre switching up the equation. the - becomes a + and makes 4 a negative

Write a rational number whose product with a given rational number is equal to the given rational number.​

Answers

Answer: wheres the given rational number?

Step-by-step explanation:

Can someone pleaseeee help and if you’re correct i’ll give brainliest

Answers

125 feet^3

Hope this helped :T

Convert 12 square feet to square inches

Answers

1728 square inches is the answer

what percent of 735 is 589​

Answers

Answer:

100%

Step-by-step explanation:

Please help me!! No files allowed just the answer. Explanation would help me to!

Answers

Answer:

27/137

Step-by-step explanation:

They multiply by 3 every time. The next would be:

9*3/137=27/137

99 is divided into two parts, A and B, in the ratio 7:4

What is the value of A?

Answers

Answer:

63

Step-by-step explanation:

7+4 = 11

99/11 = 9

A = 9 x 7

= 63

B = 9 x 4

= 36

The circumference of a circle is 17 π m. What is the area , in square meters? Express your answer in terms of π

Answers

Answer:

72.25π

Step-by-step explanation:

C=2r(pi)

r=8.5

A=(pi)[tex]r^{2}[/tex]

A=72.25π

Answer:

A = 226.865[tex]m^{2}[/tex] (rounded up) 226.87

Step-by-step explanation:

A = [tex]\pi r^{2}[/tex]

A = 3.14 x 8.5 x 8.5 = 226.865

Let me know if this helps!

solve using suitable property -2/3 x 5/7 x -9/16 x 14/25

Answers

Answer:

[tex]\dfrac{3}{20}[/tex]

Step-by-step explanation:

We need to solve the given expression i.e.

[tex]\dfrac{-2}{3}\times \dfrac{5}{7}\times \dfrac{-9}{16}\times \dfrac{14}{25}[/tex]

It can be calculated by simplifying such that,

25 = 5 × 5

16 = 8 × 2

14 = 7× 2

9 = 3 × 3

If we use all the values,

we get,

[tex]\dfrac{-2}{3}\times \dfrac{5}{7}\times \dfrac{-9}{16}\times \dfrac{14}{25}=\dfrac{3}{20}[/tex]

So, the value of the above expression is equal to [tex]\dfrac{3}{20}[/tex].

Right any Quetion of a circle with a center at (3, -8) and a radius of 13

Answers

Answer:uwu

Step-by-step explanation:

owo

rlly ez short question pls answer and ty

Answers

Answer:

ITS D

Step-by-step explanation:

GOOD LUCK

HELP PLEASE
The ratio of the diameters of two similar cylinders is 3:5. If the surface area of the smaller cylinder is 378 square inches, find the surface area of the larger cylinder.​

Answers

Answer:

1050in^2

Step-by-step explanation:

please help asap <3333333

Answers

Answer:

1: 75 degrees

2: 112 degrees

3: 125 degrees

4: 67 degrees

Step-by-step explanation:

Find the degree of the term.
3x^5

Answers

Answer:

5

Step-by-step explanation:

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