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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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
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
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?
Answer:
It will lose a computer
Explanation:
PLZZZ HELP!!! I’ll give brainliest
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.
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?
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?
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.To learn more about data extension, refer to the following link:
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what is the prefix notation for a subnet mask of ?
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?
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.To learn more about mortgage refer
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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
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?
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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how do the peograms on a computer work
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.
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
Answer: B
Explanation:
I did not get why there 3 of the same question
Answer:
I think it is:
B. a doctype declarationExplanation:
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
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?.
Write a program in python to test if given number is prime or not.
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
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
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?
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
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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In 1843 Ada Lovelace wrote an algorithm for a machine she is considered to be the worlds first programmer.
True
False
CA U ANSWER IN 5min. well lets find out ANSWER HERE. :)
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
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?
Answer:
hjhjjj
Explanation:
need some points sorry emergency
1. when is it a good idea to use lossless compression
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.
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
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
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.
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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