Multiply and simplify the following complex numbers:
(3 – 4i) · (–3+ 2i)

Answers

Answer 1

Answer:

The answer is -1 + 18


Related Questions

Help me please rn rn rn. Brainly please

Help me please rn rn rn. Brainly please

Answers

Answer:

D) (1,6)

Step-by-step explanation:

Its the opposite position that its in now

Answer:

A or D try but if I wrong sorry I'm not good in math :'(

Question 8 of 9 In a science lab, a number of rock samples are weighed. If the scientist finds one of the rocks to weigh 3 pounds and this is 49.3% of the total weight of all of the rocks, what is the weight of all of the rocks? If necessary, round your answer to the nearest tenth. O 6.1 lb O 1.5 lb O 3.1 lb O 147.9 lb​

Answers

The answer to this problem is about 6.1

Score: /1 Attempts: 30. For a perfectly symmetrical distribution, which relationship... For a perfectly symmetrical distribution, which relationship is always true? 9 Mean = median = mode Median= mode O Mean mode O Mean - median

Answers

For a perfectly symmetrical Distribution, the perfect relationship is

Mean = Median.

A symmetric distribution is when the values ​​of a variable occur with regular frequency, often the mean, median, and mode all occurring at the same point. A line in the middle of the chart indicates that the two planes are mirror images of each other. In graphical form, symmetric distributions are displayed as normal (that is, bell-shaped) distributions. Symmetric distribution is a central concept in technical trading as it assumes that the price movements of an asset over time follow a symmetric distribution curve.

A symmetric distribution can be contrasted with an asymmetric distribution. Asymmetric distributions are probability distributions that are skewed or otherwise irregular in shape.

The Properties of Symmetrical distribution is :

Mean.MedianMode.

Mean:

In mathematics, especially statistics, there are several kinds of instruments. Each average is used to summarize a particular group of data in order to better understand the overall values ​​(magnitude and sign) of a particular data set.

For datasets, the arithmetic mean, also called the "arithmetic mean", is a measure of the central tendency of a finite set of numbers. More specifically, the sum of the values ​​divided by the number of values. The arithmetic mean of a series of numbers x₁, x₂, ..., xₙ is usually given by the overhead bar. The dataset was based on a series of observations obtained by sampling from a statistical population. The arithmetic mean is the population mean is denoted by μ.

Median:

The median is the number in the middle of a sorted ascending or descending list of numbers that better describes the data set than the mean. This is the point above and below which half (50%) of the observed data lies, representing the midpoint of the data. Often compared to descriptive statistics.

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Two machines in a car parts factory mold different parts that will eventually be put together in an assembly plant. the first machine makes a part every 12 seconds, and the second machine makes a part every 45 seconds. the quality control engineer tests these parts each time they both come out of the machines at the same time. how often does she test the parts? show your work and express your answer in minutes.

Answers

The quality control engineer will test the parts every 3 minutes.

To determine how often the quality control engineer tests the parts, we need to find the least common multiple (LCM) of the time it takes for the first machine to make a part and the time it takes for the second machine to make a part.
The first machine makes a part every 12 seconds, while the second machine makes a part every 45 seconds.
To find the LCM, we can list the multiples of each number and look for the smallest number that appears in both lists:
Multiples of 12: 12, 24, 36, 48, 60, 72, ...
Multiples of 45: 45, 90, 135, 180, 225, 270, ...
From the lists above, we can see that the smallest number that appears in both lists is 180.
Therefore, the quality control engineer will test the parts every 180 seconds.
To express the answer in minutes, we can convert 180 seconds to minutes:
180 seconds ÷ 60 = 3 minutes

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evaluate lim x tends to 0 (9^x+(9^-x) -2)/x^2​

Answers

Answer:

= (ln(9))^2 = 4(ln(3))^2 = 4.8278

Step-by-step explanation:

Using L'hopital Theorem

Defrentiante the numerator and denominator twice each by its self.

like in here :

http://ar.symbolab.com/solver/limit-calculator/%5Clim_%7Bx%5Cto0%7D%5Cleft(%5Cfrac%7B9%5E%7Bx%7D%2B9%5E%7B-x%7D-2%7D%7Bx%5E%7B2%7D%7D%5Cright)

for any other limit calculation use this : http://ar.symbolab.com/solver/limit-calculator/

20 points please hurry and brainly

20 points please hurry and brainly

Answers

Answer:

the answer is C

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

Write the degree of each of the following polynomials:
(1) 5x³+4x²+7x
(ii) 4-y²
(iii) 5t-√√7
(iv) 3

Answers

Answer:

Step-by-step explanation:

To calculate the hourly revenue from the buffet after x $1 increases, multiply the price paid by each customer and the average number of customers per hour. Create an inequality in standard form that represents the restaurant owner’s desired revenue.

Type the correct answer in each box. Use numerals instead of words.

To calculate the hourly revenue from the buffet after x $1 increases, multiply the price paid by each

Answers

The inequality in the box has to be written as

x² + 2x - 80 ≤ - 65

How to solve the inequality

We have

(10 + x)1 * (16-2x) ≥ 130

Next we would have to open the bracket

160 + 16x - 20x - 2x² ≥ 130

Then we would have to arrange the equation

- 2x² - 4x + 160 ≥ 130

Divide the equation by two

- x² - 2x + 80 ≥ 65

This is arranged as

x² + 2x - 80 ≤ - 65

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Is the number √5 rational, irrational, both rational and irrational, or neither rational nor irrational?

Answers

Hi there!  

»»————- ★ ————-««

I believe your answer is:  

The square root of 5 (\(\sqrt{5}\)) is irrational.

»»————- ★ ————-««  

Here’s why:  

A rational number is a number that can be rewritten as a fraction of two integers with a nonzero denominator.  Rational numbers include integers, fractions, terminating decimal, or repeating decimals.A square root that is perfect would be rational. A non-perfect square root is irrational.  

⸻⸻⸻⸻

Since the square root of 5 is not a perfect square, it would be irrational.

⸻⸻⸻⸻

»»————- ★ ————-««  

Hope this helps you. I apologize if it’s incorrect.  

can someone plz help i need it quick

can someone plz help i need it quick

Answers

Answer:

The correct answer is 70.

60+50=110

180-110=70

the angels x and y are equivalent

Step-by-step explanation:

hoped this helped

✩brainliest appreciated✩

Answer:

the answer is dododoodod

Step-by-step explanation:

Solve for xxx. Enter the solutions from least to greatest. 3x^2 - 9x - 12 = 03x
2
−9x−12=0

Answers

The solutions to the equation 3x^2 - 9x - 12 = 0 are x = 4 and x = -1.

To solve the quadratic equation 3x^2 - 9x - 12 = 0, we can use the quadratic formula:

x = (-b ± √(b^2 - 4ac)) / (2a),

where a, b, and c are the coefficients of the quadratic equation.

In this case, a = 3, b = -9, and c = -12. Substituting these values into the quadratic formula, we have:

x = (-(-9) ± √((-9)^2 - 4 * 3 * (-12))) / (2 * 3)

= (9 ± √(81 + 144)) / 6

= (9 ± √(225)) / 6

= (9 ± 15) / 6.

We have two possible solutions:

For the positive root:

x = (9 + 15) / 6

= 24 / 6

= 4.

For the negative root:

x = (9 - 15) / 6

= -6 / 6

= -1.

The solutions to the equation 3x^2 - 9x - 12 = 0 are x = 4 and x = -1.

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Katie Ledecky has become the first women ever to swim the 1,000 yard freestyle in under nine minutes (8:59.65 but let’s call it exactly 9 for our problem) While on vacation with her friends at Redleaf lake they bet her that she couldn’t make it from point A to point B in less then ten minutes. Assuming she can swim at her Olympic level pace should she take this bet? Justify your work.

Katie Ledecky has become the first women ever to swim the 1,000 yard freestyle in under nine minutes

Answers

Katie should be able to make it from point A to point B in less than ten minutes and win the bet.

What is minute?

A minute is a unit of time equal to 60 seconds or one sixtieth of an hour. It is commonly used to measure short periods of time, such as the duration of a phone call or a meeting. The symbol for minute is "min".

According to given information:

To determine whether Katie Ledecky can make it from point A to point B in less than ten minutes, we need to calculate the distance between the two points and compare it to her swimming speed.

From the given information, we can use the Law of Cosines to find the distance between points A and B:

\(c^2 = a^2 + b^2 - 2ab cos(C)\)

where c is the distance between points A and B, a is the distance from point A to point C, b is the distance from point B to point C, and C is the angle between sides a and b.

Plugging in the given values, we get:

\(c^2 = 620^2 + 455^2 - 2(620)(455) cos(150°)\\\\c^2 = 383,825\)

c ≈ 619.5 yards

So the distance between points A and B is approximately 619.5 yards.

Now, we need to determine whether Katie Ledecky can swim this distance in less than ten minutes. We are given that she swam 1,000 yards in 8 minutes and 59.65 seconds, which is approximately 8.99 minutes. So her average speed for the 1,000 yard freestyle was:

speed = distance / time

speed = 1,000 yards / 8.99 minutes

speed ≈ 111.23 yards/minute

To swim the distance between points A and B in less than ten minutes, Katie would need to swim at an average speed of:

speed = distance / time

speed = 619.5 yards / 10 minutes

speed = 61.95 yards/minute

Katie's Olympic level swimming speed of 111.23 yards/minute is significantly faster than the required average speed of 61.95 yards/minute to swim from point A to point B in under ten minutes. Therefore, she should be able to make it from point A to point B in less than ten minutes and win the bet.

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is 6 and 2/3 less then 6.3?

Answers

No, I believe that 6 and 2/3 is larger than 6.3

Answer:

11/30 or 0.3666666667

Step-by-step explanation:

6 and 2 over 3 minus 6.3 =

Find the value of x in the triangle shown below.
15
х
9

Find the value of x in the triangle shown below.159

Answers

Answer:

x=12

Step-by-step explanation:

\(x^{2}\)=\(15^{2}\)-\(9^{2}\)

\(x^{2}\)=225-81

\(x^{2}\)=144 /sqrt

x=12

Answer the questions about the figures below.

Answer the questions about the figures below.

Answers

Answer:

1-none of the figures

2- figureB

3- figure C and B

Step-by-step explanation:

have a great day <3

PLEASE HELPP!! i’ve been struggling with this problem for the past 30 min.. lessons about polynomials.

PLEASE HELPP!! ive been struggling with this problem for the past 30 min.. lessons about polynomials.

Answers

Answer:

39.77 -> 39 or 40, depending on rounding

Step-by-step explanation:

Since 2002-1992 is 10. T would equal 10. At that point, it would be a gesture of plugging in 10 whereever you see a "t" and solve for both

Using banker's algorithm what is safe sequence.(A) P2, P3, P1 (B) P1, P2, P3 (C) P3, P2, P1 (D) None of the above

Answers

P2, P3, P1 is a safe sequence according to the banker's algorithm.

What is banker's algorithm?

The banker's algorithm gets its name from the fact that it determines whether or not a person should be granted a loan amount in order to assist the bank system in securely simulating resource allocation. In this part, we'll go through the Banker's Algorithm in depth. The Banker's Algorithm is primarily used in the banking system to avoid stalemate. It assists you in determining whether or not a loan will be granted. This procedure is used to assess the allocation for securely replicating the maximum amount available for all resources.

Here,

According to the banker's algorithm, the sequence P2, P3, P1 is secure.

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jake and terry share some money in the ratio of 2:5. what is terry’s share as a fraction? need answer asap plss

Answers

Answer:

2:5= 2/5

Step-by-step explanation:

what is 1189^2 x 1809

Answers

Answer:

the answer is 2,544,697.8

Write an algebraic expression that models the word phrase.
the sum of the product of a number x and 15, and 13
Choose the correct

Answers

Answer:

15x + 13

Step-by-step explanation:

Product of a number 'x' & 15 : x *15 = 15x

Sum of 15x & 13:

15x + 13

How many solutions does the system have?
3y = -6x + 9
e su
y=-62 +9
a fou
Choose 1 answer:
3 equ
Exactly one solution
ng w
No solutions
requ
Infinitely many solutions
se ch

How many solutions does the system have?3y = -6x + 9e suy=-62 +9a fouChoose 1 answer:3 equExactly one

Answers

Answer:

exactly 1 solution

Step-by-step explanation:

what is the reasoning of 9 +10 is 21?

Answers

The correct answer is 19

Answer:

the reasoning is incorrect.

Step-by-step explanation:

9+10=19.

the angles x, of a tree blowing from the vertical, are distributed according to the probability distribution shown. what is the probability that the tree's angle, from the vertical, will be greater than 4 degrees?

Answers

Given the probability distribution for the angle x of a tree blowing from the vertical, we can see that the probability density function (PDF) is zero for values of x less than or equal to 0. Therefore, we need to calculate the area under the PDF curve for values of x greater than 4.

Using integration, we can find that the area under the curve for x > 4 is approximately 0.7315. This means that the probability of the tree's angle, from the vertical, being greater than 4 degrees is 0.7315 or about 73.15%.

Therefore, there is a high probability that the tree's angle, from the vertical, will be greater than 4 degrees.

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convert 9/3 into a mixed number in simplest form

Answers

Answer: 3/1 or just 3.

The answer would be 3 but in simplifying 9/3 it will be 3/1.

Step-by-step explanation:


True or false ? Is f(x) a function

True or false ? Is f(x) a function

Answers

yes its a function because its x value only has 1 y value

Answer:

true

Step-by-step explanation:

The table shows a relation. ​Which statement about the relation is correct?

The table shows a relation. Which statement about the relation is correct?

Answers

Answer:

c: the relation is not a function because one input has more than one output

PLEASE HELP ME!! i dont undertsand

PLEASE HELP ME!! i dont undertsand

Answers

Answer:

c and d i think

Step-by-step explanation:

that is the answer lol

The answer is the third and last one

what is the expression !! Help I’ll give brainlest

what is the expression !! Help Ill give brainlest

Answers

Answer:

The answer is answer choice C. A - B/2

Step-by-step explanation:

a synthetic fiber used in manufacturing carpet has a tensile strength that is normally distributed with a mean 75.5 psi and standard deviation 3.5 psi. find the probability that a random sample of n

Answers

The sample tensile strength of fiber specimens will be greater than 75.75 psi in 43.25 percent of cases.

What is meant by Z-score?

Z-score: Z-score indicates how much a given value differs from the standard deviation. The Z-score, or standard score, is the number of standard deviations a given data point lies above or below mean. Standard deviation is essentially a reflection of the amount of variability within a given data set.

given that a synthetic fiber used in manufacturing carpet has a tensile strength that is normally distributed with a mean 75.5 psi and standard deviation 3.5 psi

z = (raw score - mean) / (sample standard deviation - standard deviation)

n = 6; mean=75.5 psi; standard deviation=3.5 psi.

For (greater than) > 75.75,

z = (75.75 - 75.5) / (3.5 ÷√6) = 0.17

P(z > 0.17) = 1 - P(z < 0.17) = 1 - 0.5675 = 43.25%

The sample tensile strength of fiber specimens will be greater than 75.75 psi in 43.25 percent of cases.

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3m-2n-9+(6m)-12n+7 plz plz plz plz plz plz plz plz plz plz plz plz pzl zplz plz plz plz plz plz plz plz plz plz plz plz plz plz plz pl plz plz plz plz plz plz plz plz plz plz plz plz plz plz help me

Answers

Answer:

Hope that answers your question

3m-2n-9+(6m)-12n+7 plz plz plz plz plz plz plz plz plz plz plz plz pzl zplz plz plz plz plz plz plz plz

the answer is 9m−14n−2

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