Subtract the complex numbers.

(5 + 4i) - (7 + 8i)

Answers

Answer 1

Answer:

Step-by-step explanation:

5 + 4i - 7 - 8i

-2 - 4i


Related Questions

charlie wants to make a one time investment into an account that earns 6% interest compounded semi annually. to earn $338,893 after 26 years, approximately how much money did he invest?
[tex]s = p(1 + \frac{r}{m} ) {}^{mt}[/tex]
A.$72,866.33
B.$74,492.08
C.$528,673.08
D.$217,239.10​

Answers

Answer:

PV= $72,866.33

Step-by-step explanation:

Giving the following information:

Interest rate= 6% compounded semiannually

Number of periods= 26*2= 52 semesters

Future value= 338,893

To calculate the initial investment (PV), we need to use the following formula:

PV= FV/(1+i)^n

i= 0.06/2= 0.03

PV= 338,893 / (1.03^52)

PV= $72,866.33

Answer:

The correct answer is $72,866.33

At a football game, 45% were supporting the visiting team. If 946 people attending supported the home team, what was the total number of people attending the game?

Answers

Answer: 1720

Step-by-step explanation:

Felix wants to buy some lemonade for the dinner party.
He sees these offers in a shop.

Felix decides to buy 2 packs of 8 cans.

He thinks 2 packs of 8 cans is more lemonade than 5 bottles of 1 litre.

Is Felix correct?

Show a check of your working.

Use the space below to show clearly how you get your answer.. Single line text.
(4 Points)

Answers

Answer:

Yes. Felix is correct.

Step-by-step explanation:

Find out how much ml does a can of lemonade have, I would assume its 330ml since I searched up the ml of a lemonade can.

Find out how much cans of lemonade there are in 2 packs of 8.

2 packs = 8 x 2 = 16 cans of lemonade

Now find out how much ml 16 lemonade cans equal to.

1 can of lemonade = 330ml

16 cans of lemonade = 330 x 16 = 5280ml

Now let's find 5 bottles of 1 litre.

1 litre x 5 = 5 litres.

5280 = 5 litres and 280ml

So Felix is correct about 2 packs of 8 cans is more than 5 bottles of 1 litre.

3. Molly bought four rose bushes for $16.40 each. Use
mental math to find the total cost of the bushes.
Justify your answer by using the Distributive Property.

Answers

Answer:

$65.60

Step-by-step explanation:

4×16.40 = 4×(16+0.40) = (4×16) + (4×0.40) = 64 + 1.60 = 65.60

is a trapezoid a quadrilateral

Answers

Answer:

From what I know the answer is no

Step-by-step explanation:

A quadrilateral  is a shape with four equal sides, the sides on a trapezoid are not equal therefore, its not a  quadrilateral .

Answer:

True

Step-by-step explanation:

     A quadrilateral is any shape with four sides. A trapezoid does have four sides, and therefore is a quadrilateral. The difference between a trapezoid and a "regular quadrilateral" is a trapezoid only has one pair of parallel sides, why a quadrilateral like a square or rectangle has two pairs.

Have a nice day! - I know that this is late, but this problem popped up on my dashboard and I thought I would answer :)

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

At lunch 4 friends share 3 pizzas equally what fraction of pizza does each friend get

Answers

Answer:

3/4

Step-by-step explanation:

3 divided by 4

20% of __________ is 21. PLS HELP

Answers

Answer:

105

Step-by-step explanation:

0.2(x)=21

x=21/0.2

x=105

Create an equivalent ratio to 20:24 by dividing both sides by 4. What is the equivalent ratio

Answers

Answer:

5:6

Step-by-step explanation:

since you are dividing it by 4

You need to divide both sides by 4.
20/4 = 5
24/4 = 6
So the ration is 5:6
Let me know if you have any questions!

A maintenance firm has gathered the following information regarding the failure mechanisms for air conditioningsystems:

Yes No
Evidence of electrical failure Yes 55 17
Electrical failure No 32 3


The units without evidence of gas leaks or electrical failure showed other types of failure. If this is a representative sample of AC failure, find the probability.

a. That failure involves a gas leak
b. That there is evidence of electrical failure given that there was a gas leak
c. That there is evidence of a gas leak given that there is evidence of electrical failure

Answers

Answer:

A) 0.8131 ≈ 0.81

B) 0.6322 ≈ 0.63

C)  0.7639 ≈ 0.77

Step-by-step explanation:

A)

Total number of  units

= 55 + 32 + 17 + 3

 = 107

hence the probability that the failure involves a gas leak

= ( 55 + 32 ) / 107

= 0.8131

B) probability that there is evidence of electrical failure given tat there is a gas leak

P ( A / B ) = [tex]\frac{P(A n B)}{P(B)}[/tex]

P( A∩B ) = 55/107 = 0.5140

P ( B ) = ( 55 + 32 ) / 107 = 0.8131

hence P ( A / B ) = 0.5140 / 0.8131 = 0.6322

A = failure due to electrical

B = failure due to gas leak

C)  Probability of a gas leak given that there is evidence of electrical failure

P ( B / A ) =  [tex]\frac{P(BnA)}{P(A)}[/tex]

P ( B ∩ A ) = 0.5140

P( A ) = ( 55 + 17 ) / 107  = 0.6729

hence P ( B / A ) = 0.5140 / 0.6729 = 0.7639

I need help quick plz

Answers

Step-by-step explanation:

3rd one is the answer

-2x+1

Answer:

f(x) = 2x + 1

Step-by-step explanation:

You can plug in the value to each one and see if the function is true. The only one in which the function is true is f(x) = 2x + 1, so the answer is 2x + 1.

Nine pieces of 8 in. ✕ 12 in. duct that is 2 2 3 ft in length is needed for a building. What is the total length (in ft) needed?

Answers

This question is incomplete, the complete question is;

Nine pieces of 8-in. × 12-in. duct that is 2[tex]\frac{2}{3}[/tex] ft in length is needed for a building. What is the total length (in ft) needed?

Answer:

the total length needed is 24 ft

Step-by-step explanation:  

Given the data in the question;

the length of one piece of 8-in. × 12-in. duct is 2[tex]\frac{2}{3}[/tex] ft

Now to find the total length for nine pieces of the duct;

we simple multiply 2[tex]\frac{2}{3}[/tex] ft  by nine

so

Total length = 9 × 2[tex]\frac{2}{3}[/tex]  

we convert the mixed fraction to improper fraction

2[tex]\frac{2}{3}[/tex]  = 8/3

so

Total length = 9 × (8/3) ft

Total length = 24 ft

Therefore, the total length needed is 24 ft

For his craft project, James bought 101010 pieces of ribbon that were each 2.1\text{ feet}2.1 feet2, point, 1, start text, space, f, e, e, t, end text long.
How many total yards of ribbon did James buy?

Answers

9514 1404 393

Answer:

  7

Step-by-step explanation:

The total length of ribbon is ...

  (10)(2.1 ft) = 21 ft

There are 3 feet in a yard, so the number of yards is ...

  (21 ft)×(1 yd)/(3 ft) = 7 yd

planning to start a family comes to you for information. Charles was married once before, and he and his first wife had a child with cystic fibrosis. The brother of his current wife, Elaine, died of cystic fibrosis. What is the probability that Charles and Elaine will have a baby with cystic fibrosis

Answers

Answer:

Cystic fibrosis probability is remote in current case.

Step-by-step explanation:

Cystic fibrosis is the disease in which patient suffers lung and intestine clog due to mucus. There is chance of cystic fibrosis in children when one of parent has history of such a disease. If one parent has defective genes and other parent has healthy genes then there is very remote chances of this disease in child.

if ther are 36 eggs in 4 cakes, what should we divide by?​

Answers

There would be 9 eggs in each cake. 36 divided by 4 would equal 9.

Cassidy is planning to obtain a loan from her bank for $210,000 for a new home. The bank has approved Cassidy's loan at a fixed annual interest rate of 2.7% compounded monthly for 15 years. Use the formula to determine Cassidy's approximate monthly payment.
P = Fp(t)/1 - (1+t)^-n
Answer choices:
A. Cassidy’s approximate monthly payment will be $5,717.26
B. Cassidy’s approximate monthly payment will be $1,721.15
C. Cassidy’s approximate monthly payment will be $1,474.58
D. Cassidy’s approximate monthly payment will be $1,420.11

Answers

Answer:

$1,420.11

Step-by-step explanation:

I just took the test and got it right

Cassidy's approximate monthly payment is $1420.11 if Cassidy is planning to obtain a loan from her bank for $210,000 for a new home option (D) is correct.

What is a loan amortization schedule?

It is defined as the systematic way of representing of loan payments according to the time in which the principal amount and interest are mentioned in a list manner

It is given that:

Cassidy is planning to obtain a loan from her bank for $210,000 for a new home.

A fixed annual interest rate of 2.7% compounded monthly for 15 years.

The formula is:

[tex]P=\rm \dfrac{Fp(i)}{1-(1+i)^{-1}}[/tex]

Plug all the values in the above formula:

[tex]P=\rm \dfrac{210000(2.7\%/12)}{1-(1+(2.7\%/12))^{-15\times12}}[/tex]

After calculating:

P = $1420.11

Thus, Cassidy's approximate monthly payment is $1420.11 if Cassidy is planning to obtain a loan from her bank for $210,000 for a new home.

Learn more about the amortization schedule here:

brainly.com/question/15357884

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3). AFTER PAYING HER BILLS CAROL HAS -$45 IN HER CHECKING
ACCOUNT. SHE RECEIVES A $150 PAYCHECK. HOW MUCH MONEY
DOES SHE HAVE IN HER ACCOUNT NOW?

Answers

-45 + 150 = 105

Carol has $105 in her account after receiving her paycheck.

Answer:105

explanation: -45

+150

_ ___

105

Please help! Just Answer if you know how to do it please . No wrong answers . Thank you.

Answers

Answer:

42

Step-by-step explanation:

Suppose you have $50, how much change would you receive if you bought a DVD that cost $27.99?

Answers

Answer:

$33.01

Step-by-step explanation:

Answer:

33.01

Step-by-step explanation:

There are three car salespeople at the local car dealership. The table below shows how many cars each salesperson has sold.
Car salesperson Years of employment Cars sold
Ronaldo 222 104104104
Maria 777 322322322
Bruno 121212 516516516
Which car salesperson sold the most cars per year?
Choose 1 answer:
Choose 1 answer:

Answers

Answer:

bruno

Step-by-step explanation:

1+2+1+2+1+2+5+1+6+5+1+6+5+1+6=45

Bruno = 45 Thats answer

¿De qué manera influye la ética en el hombre a partir de su función crítica? Explique.

Answers

Answer:

La ética es una rama de la filosofía que se ocupa de la reflexión crítica sobre las acciones de los hombres. En un sentido general, la ética busca establecer los criterios para juzgar si una acción puede calificarse de correcta o incorrecta, y para evaluar los motivos y consecuencias de dicha acción. Las cuestiones éticas también juegan un papel importante en la política, los negocios y la medicina, y en campos de la ciencia y el estudio como la historia, la biología y la sociología, la ética de la profesión es ocasionalmente un tema de discusión.

Así, la ética implica una evaluación de las acciones de las personas, calificándolas como correctas o incorrectas a los ojos de la sociedad. De esta manera, influye en la forma en que las personas realizan o dejan de realizar una determinada acción, ya que estas consideran sus consecuencias positivas o negativas al momento de realizarla.  

Mike and Ike decided to take a drive to Crystal Mountain Lake. As they leave home in Swamp Town, they notice that the car odometer reads 15,632 miles. When they stop at Vine Valley to have lunch, they notice that the odometer reads 15,795 miles, and they see this road sign: Crystal Mountain Lake 52 miles. What is the distance from Swamp Town to Crystal Mountain lake (2 points)? Show your work (3 points).

Answers

So if they gained 15,632 from going to swamp town, ang get 15,795 from getting lunch, they drove 163 miles, and add the 52 miles to get there, they drove 215 miles after getting lunch. So jn total, they drove 15,847

Select the correct answer from each drop-down menu.

Cameron is a member of a national gardening club. She asked 200 of her fellow members whether they use compost to fertilize their plants, and

45% responded favorably.

What is the 90% confidence interval for the true proportion of club members who use compost?

Answers

Answer:

0.45 and 0.5

Step-by-step explanation:

plato/edmentum

The 90% confidence interval for the true proportion of club members who use compost is given as (0.4, 0.507)

What is Confidence Interval?

This refers to the probability of a parameter falling across a set of values around the mean.

To find the 90% confidence interval,

Probability=  45%= 0.45

Level of significance= 90%

1-0.90

= 0.10

[tex]z\alpha /2 = z(0.1/2) = 0.05[/tex]

The value of 0.05

P0.05= 1.645

P ± 1.645 x [tex]\sqrt{P0-p/n}[/tex]

0.45 ± 1.645 * [tex]\sqrt{0.48 (1-0.45)/200}[/tex]

0.45 ± 1.645 * 0.035178

0.45 ± 0.0578

0.45 - 0.0578, 0.45 + 0.0578

(0.4, 0.507)

Read more about confidence intervals here:

https://brainly.com/question/15712887

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Plz help

Giving 10 points



What is 12.36 rounded to the nearest whole number

Answers

Answer:

12.

Step-by-step explanation:

This is how to round 12.36 to the nearest whole number. In other words, this is how to round 12.36 to the nearest integer.

12.36 has two parts. The integer part to the left of the decimal point and the fractional part to the right of the decimal point:

Integer Part: 12

Fractional Part: 36

Our goal is to round it so we only have an integer part using the following rules:

If the first digit in the fractional part of 12.36 is less than 5 then we simply remove the fractional part to get the answer.

If the first digit in the fractional part of 12.36 is 5 or above, then we add 1 to the integer part and remove the fractional part to get the answer.

The first digit in the fractional part is 3 and 3 is less than 5. Therefore, we simply remove the fractional part to get 12.36 rounded to the nearest whole number as:

12

Answer:

It’s 12


Explanation:

An experiment consists of first rolling a die and then tossing a coin.
(a) List the sample space. {(1, H), (2, H), (3, H), (4, H), (5, H), (6, H)} {(1, H), (1, T), (2, H), (2, T), (3, H), (3, T), (4, H), (4, T), (5, H), (5, T), (6, H), (6, T)} {(3, H), (4, H)} {(1, T), (2, T), (3, T), (4, T), (5, T), (6, T)} {(3, H), (3, T), (4, H), (4, T)}
(b) Let A be the event that either a three or a four is rolled first, followed by landing a head on the coin toss. Find P(A). (Enter your probability as a fraction.)
P(A) =
(c) Suppose that a new experiment consists of first rolling a die and then tossing a coin twice. Let B be the event that the first and second coin tosses land on heads. Let C be the event that either a three or a four is rolled first, followed by landing a head on the first coin toss. Are the events B and C mutually exclusive? Explain your answer.
A. Events B and C are mutually exclusive because they have different probabilities.
B. Events B and C are mutually exclusive because the first and second coin tosses cannot land on heads when a three or four is rolled first.
C. Events B and C are not mutually exclusive because the first and second coin tosses can land on heads when a three or four is rolled first.
D. Events B and C are mutually exclusive because they are dependent events.

Answers

Answer:

A

Step-by-step explanation:

I think letter C the die is consisting of 6 number 1,2,3,4,5,6 and the coin H,T. The probability of tossing a coin are only two while rolling a die has six probability that it will land either three or fou.r

Suppose the variance in trunk diameter of the giant sequoia tree species is 15.7m^2, while the variance in trunk diameter of the California redwood tree species is 10.6m^2. Let x1 represent the average trunk diameter of four randomly sampled giant sequoia trees, and let x2 represent the average trunk diameter of three randomly sampled California redwood trees. If the random sampling is done with replacement, what is the standard deviation σ(x1−x2) of the sampling distribution of the difference in sample means x1−x2 ?

Answers

Answer:

[tex]\mathbf{ \sqrt{\dfrac{15.7}{4} + \dfrac{10.6}{3}} }[/tex]

Step-by-step explanation:

Given that:

[tex]\overline x_1 =[/tex] the average diameter of 4 randomly select sequoia trunk from giant trees

[tex]\overline{x_2}[/tex] = the average diameter of 3 randomly selected trunk in California trees.

Thus;

sample size [tex]\mathbf{n_1 = 4 \ \ \& \ \ n_2 = 3}[/tex]

Variance:

[tex]\mathbf{\sigma_1^2 = 15.7 }[/tex]

[tex]\mathbf{\sigma_2^2 = 10.6 }[/tex]

Recall that:

[tex]\mathbf {( \overline x_1 - \overline x_2) \sim Normal \Big ( \mu_1 -\mu_2 \ , \ \dfrac{\sigma_1^2}{n_1} + \dfrac{\sigma_12^2}{n_2} \Big )}[/tex]

[tex]\mathbf{Mean ( \overline x_1 - \overline x_2) = \mu_1 - \mu_2}[/tex]

Therefore:

The standard deviation [tex]\mathbf{ \overline x_1 - \overline x_2 = \sqrt{\dfrac{\sigma_1^2}{n_1} + \dfrac{\sigma_2^2}{n_2} } }[/tex]

[tex]\mathbf{ \overline x_1 - \overline x_2 = \sqrt{\dfrac{15.7}{4} + \dfrac{10.6}{3}} }[/tex]

The standard deviation of the sampling distribution of the difference in the sample means is 9.95

The given parameters are:

Variance: [tex]\sigma_1 ^2 = 15.7[/tex], [tex]\sigma_2 ^2 = 10.6[/tex]Sample size: [tex]n_1 = 4[/tex], [tex]n_2 = 3[/tex].

For a normal distribution we have:

[tex]\bar x_1 - \bar x_2 = \sqrt{\frac{\sigma_1^2}{n_1} +\frac{\sigma_2^2}{n_2}}[/tex]

So, the equation becomes

[tex]\bar x_1 - \bar x_2 = \sqrt{\frac{15.7^2}{4} +\frac{10.6^2}{3}}[/tex]

Evaluate the exponents

[tex]\bar x_1 - \bar x_2 = \sqrt{\frac{246.49}{4} +\frac{112.36}{3}}[/tex]

[tex]\bar x_1 - \bar x_2 = \sqrt{61.62+37.45}[/tex]

Evaluate the sums

[tex]\bar x_1 - \bar x_2 = \sqrt{99.07}[/tex]

Evaluate the square roots

[tex]\bar x_1 - \bar x_2 = 9.95[/tex]

Hence, the standard deviation of the sampling distribution of the difference in the sample means is 9.95

Read more about sampling distribution at:

https://brainly.com/question/17218784

michelle is working on a design for a new building .she has built a model of the model of the building according to the clients specifications

Answers

There no question or some of the possible answers
???????????? There’s no answers.

What is the area of the parallelogram shown?

Answers

Answer: 234 in^3

Step-by-step explanation:

The area of a parallelogram is simply length * height.

how many 1/2 kg packets of salt can you obtain from 18 kg of salt​

Answers

Answer:

36

Step-by-step explanation:

18 × 2 = 36

Because 1/2 is half of 1 kg so multiply by 2 it makes 1 kg

The office store sells printer paper. Last week, The store sold 324 packs of white paper, which was 40% of the paper it was sold for the whole week. The store also sold 81 packs of blue paper,243 packs of yellow paper,and 162 packs of pink paper, The store manager needs to determine The percentages of the other paper sold

Answers

Answer:

72%

Step-by-step explanation:

Can someone help me please

Answers

Answer:

5

Step-by-step explanation:

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HEY CAN ANYONE PLS ANSWER DIS SPANISH WORK!!!!!! Please help me!!! 12 points :) Which principle is demonstrated by these amendments?A. All U.S. citizens automatically enjoy the right to participate in elections.B. State laws are superior to federal laws in the absence of a constitutional amendment.C. The amending process is used to emphasize the importance of a new law.D. The formal amendment process has allowed the Constitution to adapt to changes in society. 5/6-1/9=?/?-?/? =13/18 Work out the answer to this problem on a separate sheet of paper.Rudolpho takes 12 minutes to run 6 times around a 400-meter track. Assuming he runs at a constant speed, how long does he take to run 1 kilometer? earth is approximately 9 x 10^7 miles from the sun. neptune is approximately 3x10^9 miles from the sun. neptune is approximately _____ times farther from the sun than earth 100 points---please help"Ay, marry, will I join with you all," quoth the Tinker, "for I love a merry life, and I love thee, good master, though thou didst thwack my ribs and cheat me into the bargain. Fain am I to own thou art both a stouter and a slyer man than I; so I will obey thee and be thine own true servant."So all turned their steps to the forest depths, where the Tinker was to live henceforth.What universal theme does this excerpt represent?A. Money is everything.B. Rebels inspire loyalty.C. Obedience is better than rebellion.D. Cheating will get you everywhere. Brainstorming is only effective when donea.In groupsb.By yourselfC.In a respectful atmosphered.In a limited amount of time Write 2/3 and 3/4 as equivalent fractions using a common denominator. activity 2 Label the parts of the female reproductive system For each of the following products, indicate whether you believe demand will be relatively price elastic or relatively price inelastic. Give economic reasons for each reply. Remember that high demand does NOT imply high elasticity. High elasticity occurs if a change in quantity demanded is relatively large compared to the associated change in price regardless of how high the quantity demanded is to begin with. a. Mayonnaise in general b. A specific brand of mayonnaise c. Chevrolet automobiles d. Tesla automobiles e. Washing machines f. Beer Loyalists meaning and df Answers are 1-11, 3 is wrong In a library, there are 12 books in each of the 4 shelves but then Jamie takes away 3 books. Choose the correct expression and evaluation Chris and Maddie share in the ratio 3:5 How much do they each receive? A chemist prepares a solution of aluminum sulfate by weighing out of aluminum sulfate into a volumetric flask and filling the flask to the mark with water. Calculate the concentration in of the chemist's aluminum sulfate solution. Be sure your answer has the correct number of significant digits. The case for product differentiation does not include the fact that A) products that satisfy a real demand survive. B) standards of living rise with product innovation. C) new products satisfy people with different preferences. D) it wastes society's scarce resources. Read the passageI say, then, that the years [of the era] of the fruitful Incarnation of the Son of God had attained to the number of one thousand three hundred and forty-eight, when into the notable city of Florence, fair over every other of Italy, there came the death-dealing pestilence, which, through the operation of the heavenly bodies or of our own iniquitous dealings, being sent down upon mankind for our correction by the just wrath of God, had some years before appeared in the parts of the East and after having bereft these latter of an innumerable number of inhabitants, extending without cease from one place to another, had now unhappily spread towards the West.Letter to the king of England,Joan of Arc, 1492What is Boccaccios main purpose in the passage?to scare the reader about the diseaseto inform the reader about the diseaseto persuade the reader to agree with his viewsto entertain the reader by telling a historical tale Select all the equations that match the diagram. Energy from the Sun is transferred from the Earths surface to the atmosphere, resulting inatmospheric convection currents that produce winds. How do physical properties of the aircontribute to convection currents?a -The warmer air sinks because it is more dense than cooler air.b -The warmer air rises because it is more dense than cooler air.c- The warmer air sinks because it is less dense than cooler air.d -The warmer air rises because it is less dense than cooler air.