z=(2-i)^2+((7-4i)/(2+i))-8

(i is for imaginary numbers)

Answers

Answer 1

After the mathematical calculations, we can see that the value of z = 5 - 15i.

How to solve

To simplify, let's square the complex number (2 - i):

[tex](2 - i)^2 = 2^2 - 2i + 2i - i^2 = 4 - 4i - 1 = 3 - 4i.[/tex]

Divide the complex number (7 - 4i) by (2 + i):

The approach we will take involves multiplying the top and bottom of the equation by the complex conjugate of the denominator.

[tex](7 - 4i) * (2 - i) / (2 + i) * (2 - i) = (14 - 7i - 8i + 4i^2) / (4 + 1) = (14 - 15i + 4(-1)) / 5[/tex]

= (10 - 15i) / 5

= 2 - 3i.

We have to minus 8i:

[tex](3 - 4i) + (2 - 3i) - 8i = 5 - 7i - 8i = 5 - 15i.[/tex]

Therefore, z = 5 - 15i.

Read more about complex numbers here:

https://brainly.com/question/10662770

#SPJ1


Related Questions

Which method is best to display the data?

Answers

The method of bar chart is appropriate for representation.

According to the given data,

The most effective way to present the data is in a bar chart.

An effective visual representation of categorical data that shows the frequency or count of each category is a bar chart.

The length of each bar would reflect the frequency or count of each score, and the categories would be the test results in this instance.

It would be a simple and unambiguous approach to compare the various test results.

These are the three key characteristics of bar graphs:

The bar graph makes it simple to compare various sets of data among various groups.

The relationship is depicted using two axes, with the discrete values on one axis and the categories on the other.

The graph displays the key alterations in the data over time.

Hence,

Bar chart method should be used.

To learn more about bar chart visit:

https://brainly.com/question/15507084

#SPJ1

50 Points! Multiple choice algebra question. Solve e^x>2.7. Photo attached. Thank you!

Answers

Answer:

Your answer is C and D. :)

Step-by-step explanation:

A higher credit score reduces your fixed costs because you ____.

A. will pay lower interest rates
B. can have more credit cards
C. are able to carry more debt
D. can reduce the amount you need to borrow

Answers

A higher credit score reduces your fixed costs because you will pay lower interest rates. That is option A.

What is a higher credit score?

A higher credit score is one of the factors that are being considered by banks or lenders before one is being viewed as being legible to borrow money.

This is soo because a higher credit score will reduce the lending interest rates of the individual because it shows such will pay back the borrowed money as soon as possible.

Learn more about interest rates here:

https://brainly.com/question/25845758

#SPJ1

2.30 1.99 sales tax 8%

Answers

Answer:

$2.48 and $2.15, respectively

Step-by-step explanation:

2.30 * 1.08 = 2.48

1.99 * 1.08 = 2.15

on a line graph, time is usally represented by which of the following?

Answers

Time is usually represented by the x axis

please help with this ​

Answers

The solution of the function is as follows:

f(3) = 16

h(0) = -4

h(g(x)) = 3x + 5

g(y) = y + 3

f(x) - h(x) =  x² - x + 5

How to solve function?

A function relates input and output. In other words, a function is an expression that defines a relationship between one variable (the independent variable) and another variable(dependent variable).

Therefore, let's solve the function as follows:

f(x) = x² + 2x + 1

g(x) = x + 3

h(x) = 3x - 4

Therefore,

f(3) =  (3)² + 2(3) + 1 = 9 + 6 + 1 = 16

h(0) = 3(0) - 4 = -4

h(g(x)) = 3(x + 3) - 4 = 3x + 9 - 4 = 3x + 5

g(y) = y + 3

f(x) - h(x) =  x² + 2x + 1  - (3x - 4) =  x² + 2x + 1  - 3x + 4 = x² - x + 5

learn more on function here: https://brainly.com/question/30194223

#SPJ1

I thought I understood how to get the answer, but I got the second question wrong so I don't know what to do. Can anyone explain to me how to do it? I also am dyslexic and have a hard time rounding numbers. So, I dont think I understood how to round to the nearest dollar.

Answers

Answer:

$223,787

Step-by-step explanation:

r = 0.02

C = 191,000

t = 8

S = 191,000 (1 + 0.02)⁸

Follow order of operations (PEMDAS).

S = 191,000 (1.02)⁸

S = 191,000 (1.171659381)

S = 223,786.9

(We want to round to the nearest dollar, which is the ones place, so ignore all digits after the tenths place.)

Rounding, S = 223,787

A city is now 70,000. The population is decreasing, 14 years ago the population was 93,000. Use Pert to find r

Answers

The value of r which is the decay rate is calculated as: -0.0203

How to solve Growth or decay functions?

The equation for "continual" growth (or decay) is given by the expression:

[tex]A = Pe^{rt}[/tex]

where:

A is the ending amount,

P is the beginning amount (principal, in the case of money)

r  is the growth or decay rate (expressed as a decimal),

t is the time (in whatever unit was used on the growth/decay rate).

We are given that:

A = 70000

P = 93000

t = 14

Thus:

70000 = 93000 * [tex]e^{14r}[/tex]

70/93 = * [tex]e^{14r}[/tex]

14 r = In (70/93)

14r = -0.2841

r = -0.0203

Read more about Growth or decay functions at: https://brainly.com/question/27822382

#SPJ1

a train laves los angles at 2pm, heading north at 50mph. If the next train leaves 3 hours later and heads north at 60 mph, at what time will the second train catch up with the first?

Answers

Answer:

8 am

Step-by-step explanation:

First train has a 50 m/hr x 3 hr = 150 mile head start

Second train is going 60 - 50 = 10 m/hr faster and will close this 150 mile distance

 in 15 hours to catch the first train

2pm + 3 hours + 15 hours = 8 am

PLs anwser these long problems one at a time!:
(U can number them like : number 1, number 2....)

Answers

The equations are solved to get

2/5 * (1 1/4 * x - 3 1/3) - 1 1/3 x here x = 1 3/5

2 1/8 x + 3/4 x + 1/6 - 7/12 x + 5 2/3 here x = 2 6/11

0.5(x + 1.6) + 1.4(3x + 2.4) = 9.8 here x = 1.2

How to simplify the expressions

1.

2/5 * (1 1/4 * x - 3 1/3) - 1 1/3 * x

opening the parenthesis and converting to improper fraction

1/2 x - 4/3 - 4/3 x

-5/6 x - 4/3

-5/6 x = 4/3

x = 8/5

x = 1 3/5

2.

2 1/8 x + 3/4 x + 1/6 - 7/12 x + 5 2/3

adding like terms

55/24 x + 35/6 = 0

55/24 x = - 35/6

x = 28/11

x = 2 6/11

3.

0.5(x + 1.6) + 1.4(3x + 2.4) = 9.8

removing the parentheses:

0.5x + 0.8 + 4.2x + 3.36 = 9.8

4.7x + 4.16 = 9.8

4.7x = 5.64

x = 1.2

Learn more about equations at

https://brainly.com/question/22688504

#SPJ1

During a three days period, the stock of money, inc, gained 6 points, lost 10 points, and gained 2 points. What was the total change in points for the three days?

A = 2 points
B = 4 points
C = -6 points
D = -2 points

Answers

I think is D i’m not 100% but yeah i think it’s D

please helppp!!!!!!!!!!!!!!!!!!!

Answers

The inequality in slope - intercept form is,

⇒ y ≤ x + 5

We have to given that;

The graph of the inequality is shown in image.

Let two points on the line is,

⇒ (- 5, 0) and (0, 5)

Hence, The equation of line is,

⇒ y - 0 = (5 - 0) / (0 + 5) (x + 5)

⇒ y = x + 5

Thus, The inequality in slope - intercept form is,

⇒ y ≤ x + 5

Learn more about the equation of line visit:

https://brainly.com/question/18831322

#SPJ1

Use the formula A = bh to find the area, in square meters, of the parallelogram below.
9
12 m

18m

Answers

The Parallelogram area is 96 square meters.

We have,

The area of a parallelogram is given by the formula A = bh, where b is the length of the base and h is the height.

In this case,

The base of the parallelogram is the length of one of its parallel sides, which is 12 m.

The height of the parallelogram is given as 8 m.

Therefore, the area of the parallelogram is:

A = bh

A = 12 m x 8 m

A = 96 square meters

Thus,

The Parallelogram area is 96 square meters.

Learn more about parallelograms here:

https://brainly.com/question/1563728

#SPJ1

A secretary listed the frequency of calls by a patient to a doctor's office during a year, and the data is displayed in the histogram.


Which of the following best describes the spread and distribution of the data?

1. The data is skewed to the higher values because many patients call the doctor several times a day when they are sick.

2. The data is skewed to the lower values because many patients only call the doctor once or twice a year when they are sick.

3. The data is bimodal with a narrow spread because many patients call the doctor several times a day when they are sick.

4. The data is normal and has a wide spread because many patients only call the doctor once or twice a year when they are sick.

Answers

Answer:

2.

Step-by-step explanation:

The data is skewed towards 1-25. From this we can conclude that patients only call the doctor once or twice when they are sick.

In 8-card poker,each player is dealt 8 card(go figure) from a standard deck of 52 cards. How many different hands can be dealt.

Answers

The number of unique 8-card hands to be dealt are752,538,150.

How to solve

The number of different 8-card hands that can be dealt from a standard 52-card deck is given by the combination formula:

[tex]C(n, k) = n! / [(n-k)! * k!][/tex]

C(52, 8) = 52! / [(52-8)! * 8!] = 52! / [44! * 8!]

Evaluating this will give the total number of different 8-card poker hands that can be dealt from a standard deck.

Using these calculations, you would find the number of unique 8-card hands to be 752,538,150.

Read more about combination and permutation here:

https://brainly.com/question/28065038

#SPJ1

discuss four contributing factors tha may lead to learners abusing the rights of others at school​

Answers

Here:

Lack of Respect for Others: A lack of respect for others is a major factor that can lead to learners abusing the rights of others at school. When learners don't respect the rights of their peers, teachers, or other members of the school community, they may engage in behavior that violates their rights.
Bullying: Bullying is another contributing factor that may lead to learners abusing the rights of others at school. When learners bully their peers, they may use their power to intimidate and control others, which can lead to a violation of their rights.
Lack of Consequences: When learners engage in abusive behavior without facing any consequences, they may be more likely to continue their behavior. If there are no consequences for their actions, they may feel that their behavior is acceptable and may continue to violate the rights of others.
Poor School Culture: A poor school culture can also contribute to learners abusing the rights of others at school. When a school environment is not conducive to learning and is marked by aggression, disrespect, or hostility, it can lead to learners feeling less responsible for their actions and less likely to respect the rights of others. Additionally, if the school leadership and staff do not take appropriate steps to address negative behavior and foster a positive school culture, learners may be more likely to abuse the rights of others.

Brainliest please!



Stefan wants to buy a toy car at the
store. The price is p dollars. He also
has to pay a 6% tax.
Write an expression to represent
how much Stefan will pay in total for
the toy car.

Answers

To calculate the total amount that Stefan will pay for the toy car, we need to add the price of the car and the tax that he has to pay. The tax is calculated as 6% of the price of the car. Therefore, the expression that represents how much Stefan will pay in total for the toy car is:

p + 0.06p

Simplifying this expression, we can factor out p to get:

p(1 + 0.06)

This can be further simplified to:

p(1.06)

Therefore, Stefan will pay a total of p(1.06) dollars for the toy car, which includes the price of the car and the 6% tax.

Which function is represented by this graph?

Answers

Answer:

its A

Step-by-step explanation:

Which of the following is Playfair's axiom?
A. A straight line segment can be drawn between any two points.
B. A circle can be drawn with any center and radius.
C. Through a given point not on a given line, there is exactly one line
parallel to the given line.
D. All right angles are equal to one another.

Answers

Answer:

C. Through a given point not on a given line, there is exactly one line parallel to the given line.

Step-by-step explanation:

hope i helped

Answer:

Look down

Step-by-step explanation:

Thanks for reaching out for assistance! Based on the context you provided, it seems like the correct answer is C. Playfair's axiom states that there is exactly one line parallel to a given line that can be drawn through a point not on it. I hope this helps! Let me know if there's anything else I can do for you.

A
0
5
4
3
2
+
2
D'
02
A
C
02.5
B
3
D
A
Determine the scale factor used to create the image.
4
9
10
11
B
12

Answers

The scale factor used to create the image is given as follows:

k = 1/4.

What is a dilation?

A dilation can be defined as a transformation that multiplies the distance between every point in an object and a fixed point, called the center of dilation, by a constant factor called the scale factor.

The equivalent segment lengths for the original figure and the image are given as follows:

Original: AB = 12 - 4 = 8 units.Image: A'B' = 3 - 1 = 2 units.

Hence the scale factor used to create the image is given as follows:

k = 2/8

k = 1/4.

More can be learned about dilation at brainly.com/question/3457976

#SPJ1

this is graph of y=-1/2x+10. use the graph to show the equal intervals of x vaules have equaldifferences of y values.​

Answers

In the graph, differential is 4 or (p+k)-p = k as well as difference is -2 when y = 7 or y = 5, respectively.

A graph comprises a visual representation and diagram that displays facts or values in an organised manner in mathematics. The points of a graph are widely used to depict the connections between various objects. A. The difference between y = 7 or y = 5 is 4 and -2, respectively B. 4 is the difference, so (p+k)-p = k C. It differs by -2 D. Part C depends on 'k' rather than 'p,' not 'p'.

To know more about graph, here:

https://brainly.com/question/17267403

#SPJ1

What value of x satisfies the equation −1.5x−2.7=20.1+4.5x

Answers

To solve for x in the equation −1.5x−2.7=20.1+4.5x, we need to isolate x on one side of the equation. We can do this by adding 1.5x to both sides of the equation and adding 2.7 to both sides of the equation, which gives us:

-1.5x - 2.7 + 1.5x = 20.1 + 4.5x + 1.5x

Simplifying the left side of the equation and combining like terms on the right side of the equation gives us:

-2.7 = 6x + 20.1

Subtracting 20.1 from both sides of the equation gives us:

-22.8 = 6x

Dividing both sides of the equation by 6 gives us:

x = -3.8

Therefore, the value of x that satisfies the equation is -3.8.

What is the place value of 2 in 369.425

Answers

Step-by-step explanation:

do it yourself what do you do while teacher is teaching

do it yourself what do you do while teacher is teaching

The values of x and y are proportional. proportionality (k) and find the missing values. 2. UX x 6 15 9 y 42 200 d. X 14 y 21 6 15 3 7 8 Determine the constant of proportionality ​

Answers

Step-by-step explanation:

To determine the constant of proportionality (k) in a proportional relationship, we need to compare corresponding values of x and y and calculate the ratio between them.

Let's examine the given values:

2. UX: x 6 15 9 y 42 200

To find the constant of proportionality (k), we can take any pair of corresponding values and calculate their ratio. Let's choose the first pair: (6, 42).

k = y / x

k = 42 / 6

k = 7

So, the constant of proportionality (k) is 7.

Now, let's find the missing values for the second set of values:

d. X: 14 y: 21 6 15 3 7 8

Since we know the constant of proportionality is 7, we can calculate the missing values of y by multiplying each corresponding x value by 7.

Missing values for y:

- For x = 21, y = 21 * 7 = 147

- For x = 6, y = 6 * 7 = 42

- For x = 15, y = 15 * 7 = 105

- For x = 3, y = 3 * 7 = 21

- For x = 7, y = 7 * 7 = 49

- For x = 8, y = 8 * 7 = 56

Therefore, the missing values of y are: 147, 42, 105, 21, 49, and 56.

Use the figure below to answer the following questions.

Complete the statement: triangle AGC~triangle ___?

Complete the statement: triangle CDE~triangle ___?

What is m
What is m
What is BC?

What is DE?

Answers

Were the above figure is given, the complete sentence with regard to the triangles are

ΔAGC ~  ΔCDF

ΔCDE ~ ΔCAB

And, the length of BC is, 51

The length of DE is, 132.7

How is this so?

We have to given that;

⇒ CF = 32

Hence, We get;

tan 24 = CF / DF

0.44 = 32 / DF

DF = 72.7

Thus, ΔAGC ≈ ΔCDF

Here, We have;

⇒ ΔCDE ≈ ΔCAB

In triangle BCG;

BC² = 24² + 45²

BC² = 576 + 2025

BC² = 2601

BC = 51

In triangle CEF;

⇒ EC² = CF² + EF²

⇒ 68² = 32² + EF²

⇒ 4624 = 1024 + EF²

⇒ EF² = 4624 - 1024

⇒ EF² = 3600

⇒ EF = 60

Thus, We get;

DE = DF + EF

DE = 72.7 + 60

DE = 132.7

Learn more about the triangle at;

https://brainly.com/question/2773823

#SPJ1

If 10 +30 +90+...=2657200, what is the value of n?

Answers

The number of terms n of the geometric progression is n = 12

Given data ,

Let the geometric progression be represented as A

Now , the value of A is

10 + 30 + 90 + .... = 2657200

And , let the number of terms be n

common ratio r = 30 / 10 = 3

where sum of first n terms of a GP is Sₙ = a(rⁿ-1) / ( r - 1 )

On simplifying , we get

2657200 = 10 ( 3ⁿ - 1 ) / ( 2 )

Divide by 5 on both sides , we get

3ⁿ - 1 = 5,31,440

Adding 1 on both sides , we get

3ⁿ = 5,31,441

Taking log on both sides , we get

n = 12

Hence , the number of terms of GP is n = 12

To learn more about geometric progression click :

https://brainly.com/question/1522572

#SPJ1

calculus pls help guys

Answers

Calculus a broad subject that covers many topics such as derivatives, integrals, limits, and functions.

Calculus is a branch of mathematics that focuses on the study of change and motion. It provides a framework for understanding and analyzing quantities that vary continuously. The two main branches of calculus are differential calculus and integral calculus.

Differential calculus deals with the concept of derivatives. A derivative measures how a function changes as its input (usually denoted as x) changes. Geometrically, the derivative represents the slope of a function at a particular point. It can also be interpreted as the instantaneous rate of change of a function at a given point. Derivatives have various applications, such as determining the maximum or minimum values of functions, analyzing the behavior of functions, and solving optimization problems.

Integral calculus, on the other hand, focuses on the concept of integrals. An integral is a mathematical operation that measures the accumulation of quantities or the area under a curve. It essentially reverses the process of differentiation. Integrals can be used to compute the total change or accumulation of a quantity over a given interval, find the area of irregular shapes, and solve problems involving rates of change.

Calculus plays a fundamental role in many scientific and engineering disciplines. It is used extensively in physics, engineering, economics, computer science, and many other fields to model and solve real-world problems involving continuous change. The study of calculus also forms the basis for higher-level mathematics such as differential equations, vector calculus, and multivariable calculus.

For more such questions on Calculus , Visit:

https://brainly.com/question/29499469

#SPJ11

For the line that passes through the points A(5, 8, -2) and B(-1, 3, 5), find:
a. a vector equation.
b. parametric equations.
c. Symmetric equations

Answers

The symmetric equations for the line are:

(36x + 40y - 28z - 100) / 0 = (x-5) / -6 = (y-8) / -5 = (z+2) / 7

To find the parametric equations for the line passing through A(5, 8, -2) and B(-1, 3, 5), we can use the vector equation:

r = A + t(B-A)

where r is the position vector of any point on the line, t is a scalar parameter, and A and B are the given points. Substituting the values, we get:

r = (5, 8, -2) + t((-1)-5, 3-8, 5-(-2))

r = (5, 8, -2) + t(-6, -5, 7)

The parametric equations for the line are:

x = 5 - 6t
y = 8 - 5t
z = -2 + 7t

To find the symmetric equations, we can use the fact that any point on the line is equidistant from points A and B. Thus, the distance from a point (x, y, z) to A must be the same as the distance from the same point to B. Using the distance formula, we get:

√[(x-5)² + (y-8)² + (z+2)²] = √[(x+1)² + (y-3)² + (z-5)²]

Squaring both sides and simplifying, we get:

36x + 40y - 28z - 100 = 0

To learn more about : symmetric equations

https://brainly.com/question/14581323

#SPJ11

Apple juice costs $2.50 for 128 ounces. What is the price per ounce?​

Answers

Answer: $0.0195

Step-by-step explanation: To find the price per ounce of apple juice, we need to divide the total cost by the number of ounces.

Price per ounce = Total cost / Number of ounces

Here, the total cost is $2.50 and the number of ounces is 128.

Price per ounce = $2.50 / 128 ounces

Price per ounce = $0.0195

Therefore, the price per ounce of apple juice is $0.0195, which is approximately 2 cents per ounce.

Answer: $0.0195 per ounce

Step-by-step explanation:

We will create a proportion to help us solve this question.

➜ To do this, we will set two fractions equal to each other with the dollar amount in the numerator and the ounce amount in the denominator.

[tex]\displaystyle \frac{\$2.50}{128\;ounces} =\frac{\$x}{1\;ounce}[/tex]

Cross-multiply:

      128x = $2.50

Divide both sides of the equation by x:

      x = $0.0195 per ounce

what is the range of the function f(x)=x^2+2x+4

Answers

Answer: -3 to -infinity

Step-by-step explanation:

Other Questions
what is the electrophile that adds to the benzene ring during sulfonation in the electriphilic aromaic subsitution reaction Solve the congruence 5x 6 (mod7). ______, m is any integer PLS HELP HURRY Mr. Little predicts that the median of the second tests scores will increase by 20% from the median of the first test scored. Enter mr littles prediction for the second tests median score in the response box. please someone give me the answer fast!!!!! Calculate the average molar bond enthalpy of the carbon-chlorine bond in a CCl_4 molecule. Calculate the average molar bond enthalpy of the carbon-chlorine bond in a CCI_4 molecule.Given thatDelta H? _f [Cl(g)] = 121.3 kJ mol^-1Delta H? _f [C(g)] = 716.7 kJ mol^-1Delta H? _f [CCl_4(g)] = -95.7 kJ mol^-1calculate the average molar bond enthalpy of the carbon-chlorine bond in a CCl_4 molecule. In the book the kite runner , chapter 17 1, what terrible news does Amir learn in the middle of this chapter . A theater group made appearances in two cities. The hotel charge before tax in the second city was $1500 higher than in the first. The tax in the first city was 7.5%, and the tax in the second city was 5%. The total hotel tax paid for the two cities was $825. How much was the hotel charge in each city before tax? The position of a small object is given by x = 34 + 10 2t2, where is in seconds and x in meters.(a) Plot x as a function of t from t = 0 to t = 3.0 s. (b) Find the average velocity of the object between 0 and 3.0 s. (c) At what time between 0 and 3.0 s is the instantaneous velocity zero? Which statement best describes the American Indian Movement (AIM)?O A. It failed to change federal laws regarding American Indian rights.OB.It was a response to the federal policy of termination.OC. Its members were mostly from rural reservations.OD. Its leaders approved of the strategies of the Civil Rights Movement? In lab, B-galactosidase enzyme activity was measured in "units of activity". In order to determine the units of activity, one must be able to measurea. the volume of the sample assayed. (volume)b. E. coli density. (OD600)c. how long the reaction between B-galactosidase and its substrate was allowed to proceed. (time)d. the concentration of o-nitrophenol. (OD420) AC=A, C, equals Round your answer to the nearest hundredth. A right triangle A B C. Angle A C B is a right angle. Angle A B C is thirty-five degrees. Side A C is unknown. Side A B is five units. emily martin (1991) argues that descriptions of human gametes in scientific texts __________. sociologists define a minority group as a group group of answer choices that makes up less than 50 percent of the total population. that makes up less than 20 percent of the total population. with members who are denied access to power and resources. that is smaller than the dominant group. Can someone please identify the structures of the dissected fetal pig? Use the nuclear decay reaction to answer the following questions. Does undergo transmutation? Explain your answer. the black lives matter movement demanded that police practices be changed and officers using excessive force be held accountable. group of answer choices true false According to virtue ethics, the central task in morality is knowing and applying principles. T/F "the heavier you are, the more food you are likely to eat." if true, this statement expresses:a. No correlation at allb. A causal relationshipc. A positive correlationd. A negative correlation What is a work's aesthetic impact?OA. The attitude of the author toward the work's subject matterB. The perspective from which a story is toldC. The emotional or sensory effect of a workOD. A message or idea that runs throughout the work Explain the causes and effects of the Civil War?