how do you write the quotient (9+i) over (9-i) in standard form? I need the answer but more importantly, I need to learn how to solve these kinds of problems.

Answers

Answer 1
Since they are the conjugates of each (9-a and 9+a are conjugates, or with any number replacing 9) , we multiply it by (9+i)/(9+i) to get (9+i)^2/(9-i^2)=(81+2i+i^2)/(9-(-1))=(81-1+2i)/(10)=80/10+2i/10=8+i/5. Conjugates work because they make i into i^2 (-1) without any of the sneaky i's in the middle!

Related Questions

On a number line, the coordinate of point Q is -6. The length of PQ is 15. Give two possible coordinates for point P.

Answers

Hey! Hope that I can help.

Because the length of PQ is 15, that means that P is 15 spots away from Q. So we can go back 15 by subtracting 15 from -6 to get -21 and we can go forward 15 by adding 15 to get 9.

Answer: -21, 9

9 more than than the quotient of -36 an-4

Answers

" the quotient " means divide

9 more then the quotient of -36 and -4...

(-36/-4) + 9 = 
9 + 9 =
18
It would be -36 / -4 + 9, or 18.

So here, the first statement is 9 more, so you could change that to +9.

The next statement is the quotient of -36 and -4, which would just be -36 / -4. 

So just add the two together to get -36 / -4 + 9.

To find the solution of this, use PEMDAS, or the order of operations.

So do -36 / -4 first, which would result in 9 because that's how many negative fours there are in -36, resulting in 9 + 9.

9 + 9 is 18.

To convert 221 seconds to minutes, which ratio could you multiply by?
(Look at image!)

Answers

221 seconds to x minutes.

To convert the seconds into minutes, you'd need to multiply by something that would cancel out the seconds. So if the 221 seconds are the numerator right now, you'd have to multiply by something with the seconds in the denominator. 

The only one here that makes sense is
 D. 1 minute/60 seconds

Me Henderson has 2 bouncy-ball vending machines. He buys one bag of the 27-millimeter balls and one bag of the 40- millimeter balls. He puts an equal number of each in the 2 machines. How many bouncy balls does he put in each machine?

Answers

20 bouncy balls in each machine

How were Alfred Adler's theories different from Sigmund Freud's

Answers

Although similar in various formats in their core beliefs about human behavior, Adler’s theories differed from Freud due to the fact that Freud focused more prominently on the subconscious behaviors of individuals and their inherent beliefs, whereas Adler focused more so on the environment of a given individual.

Answer:

A) Adler believed that social, not psychosexual, needs had the most significant impact on personality.

Step-by-step explanation:

I took this test :) you should gimme brainliest answer fam

what is the name of the shape of the graph of a quadratic function?

Answers

parabola is the answer
hope this helps
It is called a parabola. It will look like a U. It can be right side up or upside down. I hope that helps.

Jackson says he has an odd number of model cars.he has 6 cars on one shelf and 8 cars on another shelf. Is jackson correct? Explain

Answers

No he would be incorrect because if you add 6 and 8 you get 14 and 14 is an even number. I hope this helps!

64 times 15=32 times 30 is it true or false

Answers

64 * 15 = 960
32 * 30 = 960
TRUE

64 times 15 is equal to 32 times 30 is true.

Let's calculate both sides:
64 x 15 = 960
32 x 30 = 960
Therefore, 64 times 15 is equal to 32 times 30 which is true, not false.

If bob has 50737$ and spends 500658. Is this possible?

Answers

only if the last digit is cents
:)

Suppose a line has slope - 2/3 and passes through the point (1, 8). Which other point must also be on the graph?

Answers

Final answer:

Another point on the line with a slope of -2/3 passing through (1, 8) is (4, 6). This point is found by moving 3 units right and 2 units down from the initial point.

Explanation:

To find another point on the graph of a line with a given slope and passing through a given point, use the point-slope form of a linear equation.

If a line has a slope of -2/3 and passes through the point (1, 8), we can find another point on the line by moving according to the slope. The slope tells us that for every 3 units we move horizontally (in the x-direction), we move 2 units vertically (in the y-direction), and since the slope is negative, we move in the opposite direction of the increase in x. Hence, starting from (1, 8), if we move 3 units to the right (increase in x), we must move 2 units down (decrease in y).

So to find a new point, we do the following:

Start at the point (1, 8).Move 3 units to the right, which takes us to x = 1 + 3 = 4.Move 2 units down, which takes us to y = 8 - 2 = 6.

Therefore, the point (4, 6) must also lie on the graph of the line.

Markers come in boxes of 10. A case of markers has 200 boxes.Howmany boxes of markers are in one case?

Answers

So you have boxes of 10. A case holds 200. So you can take 20*10 = 200 

20 boxes of markers are in one case

the way I would find the answer is I would divide 200 by 10, which is 20.

how to solve this problem

Answers

Absolute value because for any number given the y or answer will be no less than 0 it will.always be positive

Use muliplaction and the distributive property to find the quotient : 184 divided by 8??

Answers

The solution to 184 divided by 8 is equal to 23.

What is a quotient?

In Mathematics and Geometry, a quotient is a mathematical expression that is simply used to represent the division of a number (numerator) by another number (denominator).

Based on the information provided above, we can logically deduce that the following mathematical expression would represent the "the quotient for 184 divided by 8;"

Expression: 184/8

Solution: 92/4

Solution: 23

Read more on quotient here: brainly.com/question/748723

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Alex usually runs for 21 hours a week, training for a marathon. If he is unable to run for 3 days, describe how to find out how many hours of training time he loses, and write the appropriate integer to describe how it affects his time.

Answers

If he runs for 21 hours per week, how many hours does he run per day? There are 7 days in a week, so this would be 21/7. Then if he doesn't run for three days, you need to multiply this by 3.

Is the square root of 140 approximate to 10.7

Answers

The square root of 140 is 11.83, so no 10.7 is not approximate.

The average height of 8 adults is 1.8 m. What is the sum of their height?

Answers

Average is where the sum of the 8 people's heights were added together to equal something. That number was then divided by the amount of people which gives Yu the answer of 1.8. Therefore to work out the answer you do 8 times 1.8 which is 14.4m

multiply 8 by 1.8

8*1.8 = 14.4 meters

17*7! Will mark brainliest

Answers

119! Hope this helps!

u = vw + z, for v i need the answers how u get it

Answers

Whenever you're solving for a variable, you want to isolate the variable, or get it by itself. start by subtracting z from both sides:

u=vw+z
-z      -z

u-z=vw

Then, divide both sides by w

u-z=vw
/w    /w

Leaving you with (u-z)/ w = v

(the u-z doesn't need to be in parenthesis, I'm using it to demonstrate that the expression u-z is being divided by w, instead of just one.

Answer:

Step-by-step explanation:

partial product 342 x 405

Answers

342 times 405 is 138,510.
The answer would be 138510

Evaluate the expression when y = 2.
4 + y + 7
A.13
B.15
C.18
D.22
;)

Answers

Replace the variable with the value given.

4 + 2 + 7 =
6 + 7 =
13

So, the answer is 13.
if y=2 then 4+2+7= 13

When a class took a math test, 15% of the class failed, 25% made some mistakes (but didn’t fail), and 24 students got perfect scores. How many students were in the class?

Answers

Answer:

There are 40 students in the class.

Step-by-step explanation:

We are given the following in the question:

Percentage of class that failed = 15%

Percentage of class that made mistakes but did not fail = 25%

Number of students that got perfect score = 24

Percentage of students that got perfect score =

[tex]100\%-\text{Percentage of class that failed}-\text{Percentage of class that made mistakes but did not fail}\\= 100\%-15\%-25\%\\= 60\%[/tex]

Let x be the total number of students in the class.

Then, we can write:

[tex]60\% \text{ of } x = 24\\60\% \times x = 24\\\\\displaystyle\frac{60}{100}\times x = 24\\\\x = 24\times \frac{100}{60}\\\\x = 40[/tex]

Thus, there are 40 students in the class.

Ben eats approximately 2400 calories per day. His wife Sarah eats 5/8 as much. How many calories does Sarah eat per day?

Answers

If Ben is eating 2400 calories a day and his wife is only eating [tex]\frac{5}{8}[/tex], that means we will multiplying 2400 by [tex]\frac{5}{8}[/tex].

[tex]\frac{2400}{1} * \frac{5}{8} = 1500[/tex]

So, Sarah eats 1500 calories a day.
Final answer:

Sarah consumes approximately 1500 calories per day, which is 5/8 of Ben's 2400 calorie intake.

Explanation:

To find out how many calories Sarah eats per day, we need to perform a multiplication operation. Since it's given that Sarah eats 5/8 as much as Ben, we multiply 2400 (Ben's calorie intake) by 5/8.

Let's get to the calculation: 2400 x 5/8 = 1500. So, Sarah consumes approximately 1500 calories per day.

Learn more about Proportional Relationships here:

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Value of The underlined digit 9 in 6493

Answers

The value of 9 in 6493 is the tenth place

Which would the phrase "two times the quotient of a number and 3" look like as a variable expression?

3 n/2

2 n/3

2(n-3)

3(n-2)

Answers

2 n/3 would be the closest answer although it looks as if the 2 is supposed to be multiplied by n/3 which would lead me to write it as 2(n/3)

Final answer:

The phrase 'two times the quotient of a number and 3' converts to the variable expression 2(n/3), which simplifies to 2n/3.

Explanation:

The phrase 'two times the quotient of a number and 3' can be translated from word form to a variable expression in algebraic form. A 'quotient' in mathematics is the result of a division. Therefore, the quotient of a number and 3 could be written as n/3, where n is the number. When we say 'two times', this means we multiply this quotient by 2. Hence, the whole phrase comes out to be 2(n/3). Out of the options provided, the correct one is 2 n/3.

Learn more about Variable Expression here:

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The radius of the base of a cylinder is 28 cm and its height is 48 cm. Find the surface area of the cylinder in terms of π.

Answers

Answer:  The required surface area of the given cylinder is 4256π cm².

Step-by-step explanation:  Given that the radius of the base of a cylinder is 28 cm and its height is 48 cm.

We are to find the surface area of the cylinder in terms of π.

We know that

the SURFACE AREA of a cylinder with base radius r units and height h units is given by

[tex]S.A.=2\pi r(r+h).[/tex]

For the given cylinder, we have

r = 28 cm   and   h = 48 cm.

Therefore, the surface area of the cylinder will be

[tex]S.A.\\\\=2\pi r(r+h)\\\\=2\pi \times28(28+48)\\\\=56\pi\times 76\\\\=4256\pi~\textup{cm}^2.[/tex]

Thus, the required surface area of the given cylinder is 4256π cm².

What is negative 18 over 3 classified as ?

Answers

If you’re simplifying the problem it is 6

The sum of 3 consecutive odd numbers is 51
What is the second number in this sequence?

Answers

Answer:

second number= 17

Step-by-step explanation:

first number=a

second number=b

third number = c

we have:

a+b+c=51  equation 1

a=2n+1     equation 2

b=2n+3    equation 3

c=2n+5     equation 4

using equations 2, 3 and 4 in equation 1, we have

2n+1+2n+3+2n+5=51

6n+9=51

6n=51-9

6n=42

n=42/6

n=7

so we have

a=(2*7)+1 =15 first number

b=(2*7)+3 =17 second number

c= (2*7)+5 =19 third number

what is 4/9+1/3 in fraction from

Answers

I think it's 7/9 .. try it
 


   
Greetings!

"What is 4/9+1/3 in fraction from?"...

When adding or subtracting rationals, we must find the LCM (The Lowest Common Denominator.)

This can be done by listing the multiples of the denominators:
9: 9,18
3: 3,6,9,12

9*1=9
3*3=9

The LCM is 9.

We must do the same operation to the numerators:
4*1=9
1*3=3

The new fractions would be:
4/9+3/9
4+3=7
7/9

The answer would be 7/9.

Hope this helps.
-Benjamin

what is the product of (x+3) (2x-1)

Answers

2x² +5x -3 

is your answer

hope this helps

FOIL = first, outside, inside last
(x+3)(2x-1)
2x² - x + 6x - 3
2x² + 5x - 3  ← answer

there are 36 roses and 27 carnations. anna is making flower arrangements using both flowers, if she made the maximum number of arrangements, how many carnations would be in each?

Answers

Anna can make 9 arrangements. Each has 3 carnations (27 ÷ 9 = 3).

To determine how many carnations would be in each arrangement if Anna made the maximum number of arrangements, we need to find the greatest common divisor (GCD) of 36 and 27.

The GCD of 36 and 27 is 9.

So, Anna can make a maximum of 9 flower arrangements using both roses and carnations.

To find out how many carnations would be in each arrangement, we divide the total number of carnations (27) by the number of arrangements (9):

27 carnations ÷ 9 arrangements = 3 carnations in each arrangement.

Therefore, if Anna made the maximum number of arrangements, there would be 3 carnations in each arrangement.

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