11. Prove that if n is an integer and n² is an even integer, then n is an even integer (5 pts)

Answers

Answer 1

We have proved that if n is an integer and n² is an even integer, then n is an even integer.

We can prove this statement using proof by contradiction.

Assume that n is an odd integer. Then we can write n as 2k + 1, where k is an integer. Substituting this expression for n into the equation n² = (2k + 1)², we get:

n² = 4k² + 4k + 1

This equation tells us that n² is an odd integer, because it can be expressed in the form 2m + 1, where m = 2k² + 2k. Therefore, if n² is an even integer, then n must be an even integer.

This proves the contrapositive of the original statement: If n is an odd integer, then n² is an odd integer. Since the contrapositive is proven to be true, the original statement must also be true.

Therefore, we have proved that if n is an integer and n² is an even integer, then n is an even integer.

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Related Questions

Sora is preparing a presentation describing policies included in President Lyndon Johnson’s "Great Society” and wants to use a relevant online source.


Which source is the most relevant for the presentation?


a]-an interview with history students about the “Great Society”


b]-a photograph of Johnson making his “Great Society” speech


c]-a chart describing the conditions that led to the “Great Society”


d]-an audio recording of Johnson’s “Great Society” speech

Answers

Answer:

Option d) is correct

Explanation:

To prepare a presentation describing policies included in President Lyndon Johnson’s "Great Society”, the most relevant source that Sora should use is an audio recording of Johnson’s “Great Society” speech.

An audio recording of Johnson’s “Great Society” speech can give a more proper clarification and information regarding policies included in President Lyndon Johnson’s "Great Society”.

So,

Option d) is correct

Answer:

the answer is D

Explanation:

I just took the quiz :)

what is octal number system​

Answers

Answer:

The Octal Numbering System is very similar in principle to the previous hexadecimal numbering system except that in Octal, a binary number is divided up into groups of only 3 bits, with each group or set of bits having a distinct value of between 000 (0) and 111 ( 4+2+1 = 7 ).

Look at the network topology. What will happen with the other computers if the computer breaks at the RED X?

Look at the network topology. What will happen with the other computers if the computer breaks at the

Answers

Answer:

It will lose a computer

Explanation:

PLZZZ HELP!!! I’ll give brainliest

Answers

Answer:

The ability of a firm to improve contribution margins (revenue-variable costs) as its sales volume increases. Infinite scalability can occur only when the variable cost of serving an additional customer is zero.

Explanation:

The best that I can do

Hope this helps : )

which of the following is not true regarding primary keys? multiple choice primary keys are required in each table in a relational database. a primary key is typically a sequential number instead of something truly descriptive about each record. the purpose of the primary key is to uniquely identify each column in a table. primary keys do not provide meaningful business information.

Answers

The option that is not true regarding primary keys is b) A primary key is typically a sequential number instead of something truly descriptive about each record.

This statement is incorrect because a primary key does not necessarily have to be a sequential number.

While it is common to use auto-incrementing integers as primary keys for simplicity and efficiency, it is not a requirement.

A primary key can be any unique identifier that uniquely distinguishes each record in a table.

In fact, primary keys can be composed of one or more columns, forming a composite primary key.

These columns can be of various data types, including strings, dates, or even a combination of different data types.

The purpose of a primary key is to ensure the uniqueness and integrity of the data within a table.

The primary key serves as a means to identify and relate records across tables in a relational database.

It guarantees the uniqueness of each row in a table and allows for efficient data retrieval, updates, and deletion operations.

Primary keys also play a vital role in establishing relationships between tables through foreign keys.

While primary keys do not provide meaningful business information directly, they are essential for maintaining data integrity and enabling efficient data management in a relational database.

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Question: which of the following is not true regarding primary keys?  a)primary keys are required in each table in a relational database.

b) a primary key is typically a sequential number instead of something truly descriptive about each record.

c) the purpose of the primary key is to uniquely identify each column in a table.

d)primary keys do not provide meaningful business information.

you are experiencing a problem with a sysv init network server. you want to bring the system down and try reseating the cards within it before restarting it. which command completely shuts down the system in an orderly manner?

Answers

The command that completely shuts down the system in an orderly manner is init 0.

Both of these are identical in normal operation, but init 0 is a procedure that can be started by Super User and alerts all currently logged-in users—some of whom may have logged in via SSH—that the system is about to be switched off.

Processes are initialized and controlled by the init command. Its main responsibility is to launch programs in response to data read from the /etc/inittab file. For each line on which a user can log in, the /etc/inittab file typically instructs the init command to execute the getty command.

All Linux processes with a PID or process ID of 1 have init as their parent. When a computer boots up, it is the initial process to execute, and it continues until the machine goes down. Initialization is referred to as init.

Simply said, the function of init is to generate processes from scripts written in the configuration file /etc/inittab, which is used by the initialization system. It comes at the end of the kernel boot process.

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What is the difference between organizing your data in a list and organizing it in a data extension?

Answers

The difference between organizing your data in a list and organizing it in a data extension is that in a list, you organize subscribers by name. In a data extension, you organize them by region.

What is Data extension?A data extension contains contact information. A data extension is just a table with fields for contact information.Data extensions can work independently or in conjunction with other data extensions.The data may be used for searches, information retrieval, and sending to a selection of subscribers.You have two options for importing data extensions: manually or automatically using Automation Studio or the Marketing Cloud API.Both Contact Builder and Email Studio allow the usage of data extensions, but Email Studio is the only place where sharing, permissions, and other features are available.

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what is the prefix notation for a subnet mask of ?

Answers

The prefix notation for a subnet mask is a concise way to represent the subnet mask by indicating the number of consecutive '1' bits in its binary representation.

To understand this, let's consider a subnet mask and determine its prefix notation. A common subnet mask is 255.255.255.0. In binary, this translates to: 11111111.11111111.11111111.00000000

In this binary representation, there are 24 consecutive '1' bits before the first '0' bit. Therefore, the prefix notation for this subnet mask is /24. The prefix notation is often used in combination with an IP address to specify the network portion of the address, such as 192.168.1.0/24. In summary, the prefix notation for a subnet mask is a shorthand way to represent the number of consecutive '1' bits in the binary form of the subnet mask, making it easier to communicate and understand network configurations.

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all mortgage companies are willing to loan anyone money regardless of credit scores. True or false?

Answers

Your credit reports and scores will be taken into consideration by lenders when deciding whether you qualify for a loan and what interest rate to offer you.You can have problems getting a loan if your credit report contains mistakes.So, check your credit right away.

Should you check your credit score before applying for a mortgage?

Although a credit score as low as 500 may be acceptable, there are still a number of other conditions to be met before you can receive an FHA loan guarantee.Mortgage insurance, a 10% down payment (or 3.5% if your credit score is above 580), and a monthly payment are all requirements for these loans. When you apply for a traditional loan, it is advised that your credit score be 620 or above.Lenders may not be able to approve your loan or may be forced to offer you a higher interest rate, which could mean higher monthly payments, if your credit score is below 620. A higher score may make you eligible for lower mortgage interest rates and fees because it gives a lender more assurance that you will make payments on time.If you have a great credit score, some lenders may also lower their down payment requirements. By comparing interest rates and costs from lenders who offer loans made for consumers with weak credit, you can obtain a loan despite having a low credit score.And even better, think about repairing your credit before you apply for a loan so you may get better conditions.

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Network Security Fun. > Quizzes > Practice Exam (for midterm: m.

Practice Exam (for midterm: mods 1-7)

Started: Mar 11 at 2:07pm

Quiz Instructions

nts

Question 21

1 pts

Sean is an information security architect at a financial firm. As his first project, he must design and build an

efficient, sure-shot, yet cost-effective solution to Tetect and prevent bank credit card fraud. How should Sean

proceed?

O Design a solution that is confined to and hardcoded with a specific place and specific time. If the user

males transaction at a different place or time it will be considered an outlier and trigger an alert

Answers

Answer : Sean is an information security architect at a financial firm. As his first project, he must design and build an efficient, sure-shot, yet cost-effective solution to Detect and prevent bank credit card fraud. How should Sean proceed? O Design a solution that is confined to and hardcoded with a specific place and specific time.

Explanation: Sean is an information security architect at a financial firm. As his first project, he must design and build an efficient, sure-shot, yet cost-effective solution to Detect and prevent bank credit card fraud. How should Sean proceed? O Design a solution that is confined to and hardcoded with a specific place and specific time.

suppose your script attempts to print the value of a variable that has not yet been assigned a value. how doe s the python interpreter react?

Answers

If you try to print the value of a variable that has not been assigned a value, the Python interpreter will throw a NameError, which indicates that the variable has not been defined. For example:

}

my_var = None

print(my_var)

This will result in the following error:

NameError: name 'my_var' is not defined

The print function is a built-in function in Python that allows you to output information to the console or other output streams. It takes in any number of arguments and prints them out in the order in which they are provided. It can be used to print strings, numbers, lists, and other data types. For example:

print("Hello World!")

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suppose your script attempts to print the value of a variable that has not yet been assigned a value.

how do the peograms on a computer work

Answers

Answer: Computer programs work by telling the CPU to use input in a given way, manipulate it in another way, and then present the results as wanted. As you type in the words that you wish to, for example, add, the calculator program tells the processor to display them on your computer's screen.

Explanation:

this device can be used to type documents,send email,browse the internet,handle spreadsheets,do presentations,play games,and more.​

Answers

A computer is an electronic device that manipulates information, or "data." It has the ability to store, retrieve, and process data. You can use a computer to type documents, send email, and browse the internet. You can also use it to handle spreadsheets, accounting, database management, presentations, games, and more. A computer is an electronic machine that has the ability to receive data and process it into valuable information that it stores in different storage media, and is often able to exchange these results and information with other compatible devices. And the fastest computers today are able to perform hundreds of billions of mathematical and logical operations in a few seconds. It’s computer because the definition of a computer is A computer is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming. Modern computers have the ability to follow generalized sets of operations, called programs. These programs enable computers to perform an extremely wide range of tasks.

HELP!!!
To help ensure that an HTML document renders well in many different web browsers, it is important to include which of the following at the top of the file.

A) an tag
B) a doctype declaration
C) a tag
D) a tag

Answers

Answer: B

Explanation:

I did not get why there 3 of the same question

Answer:

I think it is:

B. a doctype declaration

Explanation:

an application programming interface (api) for a website tells you how to group of answer choices navigate the site download data from the site use jsonp to get data from the site use ajax to get data from the site

Answers

An application programming interface (api) for a website tells you how to option A: navigate the site.

What is the purpose of an API (application programming interface)?

Application Programming Interface, or API, is a software bridge that enables communication between two applications. You utilize an API every time you use a mobile app like Face book, send an instant message, or check the weather.

Companies can make the data and functionality of their applications available to internal company departments as well as to external third-party developers and business partners through the use of application programming interfaces, or APIs.

Therefore, Application Programming Interface is referred to as API. An application programming interface for the Web is known as a Web API. A browser's capabilities can be increased by using a browser API. A server API can increase a web server's capabilities.

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How to change lowercase to uppercase in excel 2010 shortcut key?.

Answers

I believe it’s shift

Write a program in python to test if given number is prime or not.

Answers

num = int(input("Enter a number to test if it's prime or not: "))

if num%2 == 0:

   if num == 2:

       print(num,"is prime")

   else:

       print(num,"is not prime")

else:

   count = 0

   for x in range(2,num):

       if num % x == 0:

           count+=1

   if count==0:

       print(num,"is prime")

   else:

       print(num,"is not prime")

I wrote my code in python 3.8. I hope this helps!

Answer:

Answer:

def main():

num = int(input("Input a number to check for prime: "))

if num > 1:

 for i in range(2,num):

  if (num % i) == 0:

   print("%d is not a prime number" % num)

   break

  else:

   print("%d is a prime number" % num)

   break

else:

 print("%d is not a prime number" % num)

 

if __name__ == "__main__":

main()

Explanation:

Solution retrieved from programiz.com.

Note, this program uses the idea of the Sieve of Eratosthenes to validate the input number by using the modulo operator to determine primeness.

The program will output to the user if the number input is indeed prime or not.

Cheers.

Explanation:

what is a software?
I'll give brainliest​

Answers

Answer: Software is any program on a computer that enables the user to easily interact with the computer, or serves a common purpose.

I hope this helped. Give it brainliest if it helped a lot.

Answer:

A software refers to the series of instructions that manages the computer peripherals and data processing.

Choose all items that represent examples of good website accessibility.
site easily found using a search engine
font size can be changed
site text makes sense when read aloud to a blind person
pages load quickly
the Tab and Enter keys can be used to move through a website

Answers

Answer:

B,C, E

Explanation:

I did it on edge :)

Answer:

b, c, and e !!

Explanation:

just did the assignment, hope this helps !! <3

brainliest pls? :)

which computer was used to solve problems in major universities,military agencies and scientific research laboratories?​

Answers

Answer:

IBM

Explanation:

The term "Super Computing" was first used by the New York World newspaper in 1929 to refer to large custom-built tabulators IBM made for Columbia University. It was used to solve problems involving by major universities, military agencies and scientific research laboratories.

Answer: IBM

The term "Super Computing" was first used by the New York World newspaper in 1929 to refer to large custom-built tabulators IBM made for Columbia University. It was used to solve problems involving by major universities, military agencies and scientific research laboratories.

Write a program in java to input N numbers from the user in a Single Dimensional Array .Now, display only those numbers that are palindrome

Answers

Using the knowledge of computational language in JAVA it is possible to write a code that  input N numbers from the user in a Single Dimensional Array .

Writting the code:

class GFG {

   // Function to reverse a number n

   static int reverse(int n)

   {

       int d = 0, s = 0;

       while (n > 0) {

           d = n % 10;

           s = s * 10 + d;

           n = n / 10;

       }

       return s;

   }

   // Function to check if a number n is

   // palindrome

   static boolean isPalin(int n)

   {

       // If n is equal to the reverse of n

       // it is a palindrome

       return n == reverse(n);

   }

   // Function to calculate sum of all array

   // elements which are palindrome

   static int sumOfArray(int[] arr, int n)

   {

       int s = 0;

       for (int i = 0; i < n; i++) {

           if ((arr[i] > 10) && isPalin(arr[i])) {

               // summation of all palindrome numbers

               // present in array

               s += arr[i];

           }

       }

       return s;

   }

   // Driver Code

   public static void main(String[] args)

   {

       int n = 6;

       int[] arr = { 12, 313, 11, 44, 9, 1 };

       System.out.println(sumOfArray(arr, n));

   }

}

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Write a program in java to input N numbers from the user in a Single Dimensional Array .Now, display

In 1843 Ada Lovelace wrote an algorithm for a machine she is considered to be the worlds first programmer.
True
False

Answers

True.

Ada Lovelace is widely considered to be the world's first computer programmer. In 1843, she wrote an algorithm for Charles Babbage's Analytical Engine, a proposed mechanical general-purpose computer. Lovelace's algorithm is considered to be the first computer program, as it was intended to be processed by a machine and could perform a series of complex mathematical calculations. Lovelace also recognized the potential for computers to go beyond number-crunching and be used for creative endeavors, such as generating music or graphics. Her contributions to computer science and her foresight into the potential of computing have earned her a place in history as a pioneer in the field.
Answer

The correct answer is True

CA U ANSWER IN 5min. well lets find out ANSWER HERE. :)

CA U ANSWER IN 5min. well lets find out ANSWER HERE. :)

Answers

Answer:

Both are True

I hope this helps!

Answer:

Explanation:

12 is 1

and 13 is false but i aint so sure

what is a scratch application pls help me build a game through scratch step by step​

Answers

Answer:

Scratch is the a coding community and a coding language with simple visual interface that allows people to create digital stories, games and animeations ect.

Explanation: Migth be able to help depending on waht you are making

. List in order of priority the various gaps (factors) you would like to address in the context of your country?

Answers

Answer:

hjhjjj

Explanation:

need some points sorry emergency

1. when is it a good idea to use lossless compression

Answers

A lossless compression algorithm is useful only when we are more likely to compress certain types of files than others; then the algorithm could be designed to compress those types of data better. Thus, the main lesson from the argument is not that one risks big losses, but merely that one cannot always win.




Hope this helped please brainiest

1) Simplify the code below using an array. There shouldn't be any if/else if statements left in your solution. Assume that the integer e passed to the method is between 0 and 4. 2) Write a method that takes an array of doubles and that returns the largest element in the array. 3) Write a method isSorted (double[] a) that takes an array of doubles a and that returns true if the array is sorted and false if not. An array a is sorted if a[0] < = a[1] < = ? < =a[a.length - 1] 4) Write a method, flipArray(String[] a), that takes an array of Strings a and that reverses it. For instance, if the array a is [''Monday'', ''Tuesday'', ''Wednesday'', ''Thursday''], the call flipArray(a) would change a to [''Thursday'', ''Wednesday'', ''Tuesday'', ''Monday'']. You can't use an array other than a, or an ArrayList in your solution.

Answers

You can simplify the code below using an array by replacing the if/else if statements with a switch statement.
Example:
int e;
switch (e) {
 case 0:
   // code to execute if e is 0
   break;
 case 1:
   // code to execute if e is 1
   break;
 case 2:
   // code to execute if e is 2
   break;
 case 3:
   // code to execute if e is 3
   break;
 case 4:
   // code to execute if e is 4
   break;
 default:
   // code to execute if e is none of the above
   break;
}

You can write a method that takes an array of doubles and returns the largest element by looping through the array.
Example:
public static double largestElement(double[] array) {
 double max = array[0];
 for (int i = 1; i < array.length; i++) {
   if (array[i] > max) {
     max = array[i];

   }
 }
 return max;
}


You can write a method is Sorted that takes an array of doubles and returns true if the array is sorted and false if not by looping through the array and comparing adjacent elements to check if they are in order.

Example:
public static boolean isSorted(double[] a) {
 for (int i = 0; i < a.length - 1; i++) {
   if (a[i] > a[i + 1]) {

     return false;
   }
 }
 return true;
}

You can write a method flipArray that takes an array of Strings and reverses it by swapping the first element with the last element, the second element with the second to last element, and so on until the middle of the array is reached.

Example:
public static void flipArray(String[] a) {
 int n = a.length;
 for (int i = 0; i < n / 2; i++) {
   String temp = a[i];
   a[i] = a[n - i - 1];
   a[n - i - 1] = temp;
 }
}

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Stand-alone application systems are sometimes called __________, are configured for use in a particular environment

Answers

Stand-alone application systems are sometimes called deployed applications. They are configured for use in a particular environment. A stand-alone application is a single program that is designed to work on a computer that does not require any installation or support files from other software programs.

It can run without the need for a specific framework or application server, although it might require an operating system or a runtime environment. This type of application can run without internet connectivity, and it is popular for desktop applications because of the speed and responsiveness of the application.

However, since the application is deployed locally, it needs to be updated manually. Stand-alone application systems are also sometimes called "native applications" or "client applications." They are typically written in languages like Java, C++, or C#. The development process involves the creation of an executable file that can be installed on a user's computer, and this process can be automated using tools like installers or configuration scripts.

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What report shows data segmented by channel?

a. Segmentation
b. Source/Medium
c. Channels
d. Attribution

Answers

Channels. A Channels report shows data segmented by channel, which helps you analyze the performance of different marketing channels and their impact on your website traffic and conversions.

A collection of buyers with comparable demands and a group of sellers who segmented by channel fill those needs through comparable retail channels and business models are referred to as a retail market segment. The establishment of a link between the wholesaler and the client in the former case, and the manufacturer and retailer in the latter, is the main contrast between the wholesale and retail market segments.

The difference between the wholesale and retail pricing of a certain commodity ensures that the wholesale price is always less than the retail price. The art of product sales, which is essential in the retail sector, is not necessary in the wholesale market. A wholesale company is larger in scale than a retail one. Mass media is the type of channel used to reach a large audience.

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Which of the following probably would not be the first step in research? O Visiting the corporate library. O Interviewing students. A O Visiting the public library. O Consulting the World Wide Web.

Answers

Visiting the public library probably would not be the first step in research. While visiting a public library can be helpful for research purposes, it may not always be the most efficient or effective first step.

Instead, the first step in research typically involves defining a research question or topic and then conducting a preliminary review of relevant literature and sources to gain a better understanding of the topic and identify any gaps or areas for further investigation. This can involve consulting a variety of sources, such as scholarly journals, books, online databases, and even the World Wide Web. After conducting a preliminary review, researchers can then develop a more focused research question or hypothesis and begin collecting and analyzing data to answer their research question

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Other Questions
The temperature at which an alligator's egg is incubated will determine the sex of the offspring. the dependent and the independent variables in this experiment are ________. How many molecules are in 0.89 moles of CO2 Ketogenesis takes place in the___ of ____ Exercise releases endocrines, which are chemicals in your brain that make you feel good true or false if a, b, and c are nn invertible matrices, does the equation c1(a x)b1=in have a solution x? if so, find it is global media a friend of foe? why? The way people, goods, and ideas are connected & transferred to other places In which jobs is automation likely? A) jobs that are unpredictable. B) jobs involving management. C) jobs involving exercising creativity. D) jobs involving But none of that had worn out his marrow. none of that. it was the ribbon. tying his flatbed up on the bank of the licking river, securing it the best he could, he caught sight of something red on its bottom. reaching for it, he thought it was a cardinal feather stuck to his boat. he tugged and what came loose in his hand was a red ribbon knotted around a curl of wet wooly hair, clinging still to its bit of scalp. he untied the ribbon and put it in his pocket, dropped the curl in the weeds. on the way home, he stopped, short of breath and dizzy. he waited until the spell passed before continuing on his way. a moment later, his breath left him again. this time he sat down by a fence. rested, he got to his feet, but before he took a step he turned to look back down the road he was traveling and said, to its frozen mud and the river beyond, "what are these people? you tell me, jesus. what are they?" show complete work for question no 2: sensitivity andscenario analysiswould you accept the project or not and why?1) Life Period of the Equipment = 4 years 2) New equipment cost 3) Equipment ship & Install cost 4) Related start up cost 4) 5) Inventory increase 6) Accounts Payable increase 7) Equip. Salvage Value Which of the following describes elements of the Mayan culture?Duodecimal mathHuman sacrificeJade jewelryMonotheismPyramid buildingSportsUnderstanding of astronomy The sales tax on a purchase of $56 is 7.5%. What is the total purchase price, including the sales tax?A.$4.20B.$5.60C.$60.20D.$63.50 Mary anticipates a much better candidate will be hired with a panel committee. Why?More people come up with more questions to ask rapid fireThe group will come to a common gut reaction if a fairer mannerThis will go much faster since they only have to mark forms and addA common score will be achieved through pre-planned questions and response ratings question 2 consider the one-period model, where the production function of output is given by: use the production function described above to find the equation for the production possibilities frontier in this economy what is the slope of the production possibilities frontier equal to in this case? The average sale price of new one family houses in the United States for a recent year was $238,100. Find the range of values in which at least 88. 89% of the fake prices will lie if the standard deviation is $53,500 Items from the 2015 income statement, statement of retained earnings, and balance sheet of Activision Blizzard, Inc., are listed below in alphabetical order. Solve for the missing amounts. (Loss amounts should be indicated with a minus sign.) Activation Blizzard, IncCommon Stock $3180Dividends 130Net Income (Loss) Retained Earnings, Beginning of Year 3614Retained Earnings, End of Year 5047Total Assets 15,584Total Expenses Total Liabilities 7,357Total Revenues 4,567 a middle-aged client is proactive with personal health maintenance and reports taking 2400 international units of vitamin d daily, stating, "more is better when it comes to vitamins." the nurse should provide health teaching to the client associated with a risk for which disorder? What did the people who supported Prohibition want to do? multiple choice question jack pickle decided to start a small business as a corporation. his initial investment was $4,000 cash in exchange for common stock. demonstrate how to record this transaction in the accounting equation. multiple choice question. increase cash by $4,000; increase common stock by $4,000. decrease cash by $4,000; decrease common stock by $4,000. increase cash by $4,000; increase revenues by $4,000. increase cash by $4,000; decrease common stock by $4,000. The following group of equations represents which type of system?[x + y =9+-1A. System of nonlinear equationsB. System of linear inequalitiesC. System of nonlinear inequalitiesD. System of linear equations