Type the correct answer in each box.

,
then a = and b = .

Type The Correct Answer In Each Box.,then A = And B = .

Answers

Answer 1

Answer:

a = 0, b = -15

Step-by-step explanation:

Given the following complex number;

x1 = 3(cosπ+isinπ)

x2 = 5(cosπ/2 - isinπ/2)

x1x2 = 15(cosπcosπ/2 - icosπsinπ/2+isinπcosπ/2 -i²sinπsinπ/2)

x1x2 = 15(0 - i(-1)+0 -0)

x1x2 = 15(-i)

x1x2 = -15i

x1x2 = 0-15i

Since

0 - 15i = a+ bi

Compare

a = 0

-15-  = bi

b = -15

Hence a = 0, b = -15


Related Questions

5.) Find the area of the triangle in bold.

Answers

Answer:

the answer is 0.98

Step-by-step explanation:

if it not correct plz correct me

Answer:

.975 mi²

Step-by-step explanation:

Hello There!

Formula for area of a triangle [tex]A =\frac{1}{2}bh[/tex]

where b = base and h = height

the dimensions of the triangle shown are b = 1.5 and h = 1.3

given the dimensions all we have to do is plug in the values into the formula

so

[tex]A=\frac{1}{2} 1.3*1.5\\1.3*1.5=1.95\\\\\frac{1.95}{2} =0.975[/tex]

so we can conclude that the area of the triangle is

.975 mi²

. A large tree, b, removes 1.5 kg of pollution from the air each year. A small tree, s, removes 0.04 kg of pollution each year. An urban forest has 1,650 large and small trees. Together, these trees remove 1,818 kg of pollution each year. Which system of equations could be used to find the number of large and small trees in the forest?

Answers

Answer:

The system of equations are:

s + b = 1650.... Equation 1

0.04s + 1.5b = 1818........ Equation 2

The number of

Small trees = 450 trees

The number of Big trees = 1200 trees

Step-by-step explanation:

From the above question

Small trees = s

Large trees = b

An urban forest has 1,650 large and small trees.

Hence,

s + b = 1650.... Equation 1

s = 1650 -b

A large tree, b, removes 1.5 kg of pollution from the air each year. A small tree, s, removes 0.04 kg of pollution each year. Together, these trees remove 1,818 kg of pollution each year.

Hence:

0.04s + 1.5b = 1818........ Equation 2

We substitute 1650 - b for s

0.04(1650 - b) + 1.5b = 1818

66 - 0.04b + 1.5b = 1818

- 0.04b + 1.5b = 1818 - 66

1.46b = 1752

b = 1752 ÷ 1.46

b = 1200 trees

Solving for x

1650 - b = s

s = 1650 - 1200

s = 450 trees

Joshua buys a bunch of watermelons for $7.75. He plans on feeding his friends watermelon as a snack, and there will be 15 people to feed. What is the unit price for one serving of watermelon? The unit price for 1 serving of watermelon is (round to the hundredths place):

Answers

Answer:

$0.52

Step-by-step explanation:

To find the unit cost of one serving of watermelon, divide the price of the bunch of watermelons by the number of people to be fed

unit price = price of the bunch / total people to be fed

$7.75 / 15 = $0.52

The value of a bank account, B, after x years is represented by the equation B = 1000(1+.014)x. To the nearest penny, how much is the account worth after 15 years?

Answers

Answer:

your mom

Step-by-step explanation:

you mom

Solve for n. -4(n+5)=8

Answers

Answer:

Simplify first:

-4n - 20 = 8

Add 20 to both sides:

-4n = 28

Divide by -4:

Therefore you will get:

n = -7

Answer:

n = -7.

Step-by-step explanation:

-4(n + 5) = 8

-4n - 20 = 8

-4n = 28

n = -7.

finding angle measures with trig. Find the missing angle measures. Round to the nearest whole number​

Answers

Answer:

this is your answer look it once

The vertex form of the equation of a parabola is y = (x+ 3)2 + 53.
What is the standard form of the equation?

Answers

Answer:

y = 2x² + 12x + 71

Step-by-step explanation:

y= 2x^2 + 12x + 71 that’s what I got when I did it

What value of x makes the equation 5(4x - 1)=4(2.5x+8) true?

need help asap ?

Answers

Answer:

37/10

( I hope this was helpful) >;D

Hopefully this helps

12x - 6y = 13
8x - 4y = -21

Answers

Answer:

24

Step-by-step explanation:

24

Can someone please answer this question. If I get it right this is hopefully the last question I’ll be posting for the rest of the day

Answers

The answer for the question is 59

Answer:

53°

Step-by-step explanation:

not sure what you mean by nearest degree but use the cosine ratio to get the answer.

in ΔCDE we have the hypotenuse and adjacent side so use cosine ratio : cos C= 45/75

<C=cos^1 (45/75)

<C= 53°

PLEASE HELP DUE AT MIDNIGHT!

Answers

Answer:

60 i think

Step-by-step explanation:

109-180= 71

u=71

71+49=120

120-180=60

109 is on a straight line with an interior angle of a triangle, so 180 - 109 = 71 degrees.

Add two known interior angles (71 + 49) together and you get 120 degrees.

Subtract 120 from 180 (since 180 is the sum of all three interior angles of a triangle) and you get 60 degrees.

Answer: ∠ULE is 60 degrees

Please its really urgent, step by step working out

Answers

Answer:

70.99

Step-by-step explanation:

Use Pythagorean Theorem to find the shortest distance.

80^2-50^2=3900

Square rt= 62.44

Subtract by 15

47.44

Next find half of the circular path it is (3.14 x 15)/2

23.55

Add 47.44+23.55=70.99

Hope this is correct

7/12 minus 1/6 gggggggggggggggggggg

Answers

Answer:

[tex] \frac{5}{12} [/tex]

Step-by-step explanation:

[tex] \frac{7}{12} - \frac{1}{6} \\ \\ = \frac{7}{12} - \frac{2}{12} \\ \\ = \frac{7 - 2}{12} \\ \\ = \frac{5}{12} [/tex]

Answer:

0.41666666666

or

5/12

Step-by-step explanation:

I WILL GIVE BRAINLIEST!!!

NO SENDING ME LINKS!!!

Answers

Here’s a tip when you want to get all your answers right on khan academy.... Turn your Wifi off click an answer & it will give you the right ones then turn you WiFi back on and choice the correct answers for the questions.

please and thank you ​

Answers

The answer to your question is D

Answer:

B

Step-by-step explanation:

ABC:

A = 10 degrees

B = 145 degrees

145 + 10 = 165

180 - 165 = 15 degrees

C = 15 degrees

MNP:

M = 145 degrees

N = 15 degrees

P = so therefore, P is 165 degrees

MNP is similar to ABC

What is the radius of a circle that has a sector area of 4 pi cm^2 and a central angle of 1pi/2 radians?
a.4
b.5
c.3pi
d.4pi​

Answers

Answer:4

Step-by-step explanation:

need help ASAP !!!

[tex] \sqrt{88 \times 11 \times 2 \times 4} [/tex]

Answers

Answer:

√(88×11×2×4}=√88²=±88 is your answer

Answer:

[tex]±88.[/tex]

Step-by-step explanation:

[tex]= \sqrt{88 \times 88} [/tex]

[tex] = \sqrt{ {88}^{2} } [/tex]

[tex]±88[/tex]

which of the following situations could be modeled by an exponential function?
A. The water level of a tank decreases by 5 gallons every day.
B. The amount of money collected by a charity increases by $5,000 each year.
C. A tree was 10 feet tall when purchased and grows at a rate of 2 feet per year.
D. The number of people in a stadium is decreasing at a rate of 45% every 10 minutes.

Answers

Answer: Option D.

Step-by-step explanation:

An exponential function is something like:

f(x) = A*(r)^x

Where:

A = initial amount.

r = rate of growth

x = variable.

This type of function is used to describe situations like "you have A dollars, and it increases by 30% each week"

or:

"There is a population of A animals, and it doubles each year"

Let's analyze briefly all the given options and see which one is an exponential function.

A) The water level of a tank decreases by 5 gallons every day.

This is a linear relation, if W is the initial amount of water, and x is the number of days, then the water level of the tank after x days is:

y = W - 5 gal*x

B) The amount of money collected by a charity increases by $5,000 each year.

The amount collected increases $5000 each year.

Then if in year 1 they collected A.

in year 2 they collected A + $5000

in year 3 they collected A + 2*$5000

We already can see the pattern, this is a linear relation:

in year X they colected A + (X - 1)*$5000

C) A tree was 10 feet tall when purchased and grows at a rate of 2 feet per year.

if y is the height of the tree, and x is the number of years, this can be written as:

y = 10ft + x*2ft

Again, a linear relation.

D) The number of people in a stadium is decreasing at a rate of 45% every 10 minutes.

Let's define x as each "lapse" of 10 minutes that passes.

If N is the initial number of people in te stadium, then after 10 minutes the number of people is = N*(1 - 45%/100%) = N*(1 - 0.45) = N*0.55

After another 10 minutes, the population decreases again.

N*0.55*(1 - 45%/100%) = N*0.55*0.55 = N*0.55^2

We can see the pattern here, this can be written as

People(x) = N*(0.55)^x

This is an exponential function.

Select all the values of x that make x + 3 > 5 true.

Answers

Answer:

D AND E

Step-by-step explanation:

As a first step in developing a new drug to treat cancer in humans, an initial study of the drug is undertaken in rats. Three hundred rats with cancer are studied, and each is assigned to one of three treatments. One hundred rats are randomly assigned to a high dose of the new drug, 100 are randomly assigned to a low dose, and 100 are randomly assigned to a control group (no drug). After six months, each rat is examined and classified as having developed no tumors, one tumor, or two or more tumors.Which of the following would be an appropriate alternative hypothesis in this study for a chi-square test for homogeneity of tumor response across treatments?A. Ha :Ha : There is no difference in the distribution of tumor status across the three treatments.B. Ha :Ha : There is a difference in the distribution of tumor status across the three treatments.C. Ha :Ha : There is no association between tumor status and treatment.D. Ha :Ha : There is an association between tumor status and treatment.E. Ha :Ha : The proportion of rats with no tumors is the same for each treatment group.

Answers

Solution :

Here, we are interested to study if the treatments have any effect on going tumor or not. Actually, this is model is an ANOVA one way layout with a treatment 'drug'.

In this kind of model or ANOVA model, we take the negative statement as our null hypothesis i.e.,

[tex]$H_0:$[/tex] There is no difference in the distribution of tumors states across the three  statements.

Therefore, alternative hypothesis would be :

[tex]$H_a:$[/tex] There is a difference in the distribution of tumor states across the three treatments.

So the correct option is (B).

f(x)=9x+3 find f(5).

Answers

Answer:

48

Step-by-step explanation:

f(x)=9x+3

f(5)=9(5)+3

f(5)=45+3

f(5)=48

HELP HELP PLEASE!! D:

Find the length of the missing side of the trapezoid below:
PLEASE NO CAP!!

Answers

2 root 10 bfngjtejrahtwhw

3) A 24 foot wire is attached to an electrical pole. If the pole is 20 feet tall, how

far is the wire sitting from the base of the pole? Round answers to the nearest

tenth of a foot.

9ned

WIRE

SASE

A) 312

B) 133

C) 176

OD) 132

HELLPP PLEASEEE

Answers

Answer:

13.3 feet

Step-by-step explanation:

This question can be solved using Pythagoras theorem

The Pythagoras theorem : a² + b² = c²

where a = length = 20

b = base

c = diagonal = 24

24^2 = 20^2 + b^2

576 = 400 + b^2

b^2 = 176

b = 13.3

(8.4x10^3)-(6.4x10^2)
Write anserr in scientific notation

Answers

i think the answer is 2x10^1
2x10^1 hope it helps!!

Make the Fraction into a Decimal square route 81 over 100

Answers

Answer: 0.9

Step-by-step explanation:

Sqrt 81 is 9

over 10 is 9/10

which is 0.9

Find the distance between (8,5)(-1,3). Round your answer to the nearest tenth.

Answers

Answer: 9.2

Step-by-step explanation:

d = sqrt ((x2-x1)^2 (y2-y1)^2)

d = sqrt (85)

d = 9.219544

both sum of three consecutive integers is 108 what are the three integers ​

Answers

Answer:

35 , 36 , 37

Step-by-step explanation:

Let the consecutive integers be x, (x + 1) , (x +2)

x + x + 1 + x +2 = 108

x + x + x + 1 + 2 = 108          {Combine like terms}

     3x + 3   = 108          {Subtract 3 from both sides}

             3x = 108 - 3

            3x = 105            {Divide both sides by 3}

              x = 105/3

               x = 35

The three integers are, 35 , 36 , 37

11) Nick & John ordered burritos & tacos for lunch. Nick
ordered 3 burritos & 4 tacos for $11.33. John ordered 9
burritos & 5 tacos for $23.56. Find the cost of one
burrito & one taco.

Answers

Answer:

taco:  $1.49 each

burrito:  $1.79 each

Step-by-step explanation:

Let b = cost of one burrito

     t =  cost of one taco

(1)     3b  + 4t  = 11.33              (2)     9b + 5t = 23.56

Multiply (1) by -3 and add to (2)     -9b - 12t = 33.99

                                                              - 7t = - 10.43

                                                                  t = 1.49

       3b + 4(1.49) = 11.33

          3b + 5.96 = 11.33

                  3b = 5.37

                    b = 1.79

Solve the equation.
2t – 5 = -10
t

Answers

Answer: (2t - 5) • (t - 1) -  2  = 0

t=3

Step-by-step explanation:

Answer
2t-5=-10t
T=5/12
In decimal 0.416

Hope this helps

Please Help ill mark as brainiest

Answers

Answer:

Step-by-step explanation:

Price at the end of 1 month = $59 ⋅ 1.03 = $60.77

Other Questions
A major purpose of the Lewis and Clark expedition of 1804 was to explore which of the following? In "Where It All Began, what sequence word or phrase would you retell how soon the settlers were attacked after their arrival in Jamestown A jar of sweets contains 5 yellow sweets, 4 red sweets, 8 green sweets, 4 orange sweets and 3 white sweets. Ola chooses a sweet at random. What is the probability that she will pick either a yellow or orange sweet? Give your answer as a fraction in its simplest form. What is the best food when visiting Japan and have nothing but 1 American dollar???PS FEAR NOT FOR RAMEN IS HERE Tell what family members these people are and their age in 2 sentences. Use possessive adjectives and tener.Example: Information: Barbara / hermana mayor (19 aos) Sentence: Barbara tiene una hermana mayor. Su hermana mayor tiene diecinueve aos. Information: Nosotros / abuelos (67 aos) Sentence: Nosotros tenemos un abuelo. Nuestro abuelo tiene sesenta y siete aos.Please do these for me!!! 1. Yo / perro (5 aos) 2. T y yo / dos to (48 y 44 aos) PLEASE HELP ME ASAP PLEASE HELP ME ASAPPLEASE HELP ME ASAP If f(x) = 3x5 + 4x3 + 3, then what is the remainder when f(x) is divided byx - 3? My boss is 28 years old and has inherited a 500 billion-dollar company. He actually asked me to have dinner alone. Oh my God, I just worked in the company for 20 days. I doubt that he came into the company because of my beauty? I know that it takes him a day to choose a car to date me. He wants to choose one of his 500 sports cars to match my temperament. Oh my God... Its so distressing, do I want to agree. ..., can you help me? ..."Read the latest handsome boss novels and download the Finovel App. All the latest good novels are free to read without any subscription fees. You can fall in love with handsome boss, martial arts fights, fairy cultivators...Click the link below to download and use, enter my invitation code 292755, and get 8000 points for the newcomer bonus!https://zei6iaqu-fey3ybur3q-an.a.run.app/df.html?ggc=292755%257C1%257C3&t=1 Which of the following statements is true for DMA: (only one correct answer) A. In DMA, Processor checks status until the operation is complete B. In DMA, Processor is interrupted when I/O module ready to execute data C. In DMA, no interrupt is produced D. In DMA, interrupt is sent when the task is completed E. None of the above Can A Expert Help Me Find The Value Of X Please (Geometry) Hurricane katrina was a catastrophe,contributing to the problem was subsiding of the region from 3 to 12 feet per 100 years.Which one of the following is not a cause of this subsidence?A)Extraction of ground waterB)Extraction of oil and gasC)Loss of fresh waterwetlandsD)Lack of tall tress such as cyprusE)Building on hilly areas ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo Please help !!!!!!!!!! PLEASE HELP ! 15 POINTs! ABCD is a trapezium Calculate the perimeter of the trapezium Give your answer correct to 3 significant figures Which of the following pair of genotypes result in the same phenotype? Help I forgot how to do this and need help! Which if the following expressions is equal to 9/4? Help please! Use the form of verb: fui/fuiste/fue/fuimos/fueron How do you write the family in Spanish? (include definite article and noun) please help I have 5 min Certain things need to come in and other things need to be send out of the cellWhich of the following is NOT example a the cell needs to bring into the cell?A.SugarsB.OilsC.proteinD.fats