Consider the following propositional definite clause program:
→R
S,P→Q
R,T→S
R→T
Select all of the queries that have at least one successful derivation tree.
Select one or more:
? P
? S
? R
? T
? Q
Answers
The queries ? P, ? S, ? R, and ? T have at least one successful derivation tree. Option a, b, c, and d is correct.
? P: This query can be derived successfully because we have a definite clause rule S, P → Q, which implies that if S and P are true, then Q must also be true. Thus, we can derive P.
? S: This query can be derived successfully as well. From the definite clause rule R, T → S, we know that if R and T are true, then S must be true. Since we have the definite clause R → T, we can infer that if R is true, then T is also true. Therefore, we can derive S.
? R: This query can be derived successfully based on the initial fact →R. Since → represents implication, it implies that if R is true, then the query R is true as well.
? T: This query can be derived successfully too. By using the definite clause R → T, we can infer that if R is true, then T is also true.
Therefore, the queries ? P, ? S, ? R, and ? T have at least one successful derivation tree. Option a, b, c, and d is correct.
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Related Questions
in cell reference if you copy formula to another cell the cell reference to the formula will change according
Answers
Answer:
the type of reference
Explanation:
There are many cell reference types eg relative,absolute and mixed cell referencing. if you write your cell reference in relative type then it will change as you copy it to another cell. if you select absolute cell referencing then it will not change if you copy to another cell.
TRUE/FALSE
6) If a primary key is not assigned, it will not be added automatically as an ID at the
time of creating the table
7. Field name in MS Access can start with blank space
8. Field name can have maximum of 64 characters
9. A table can have two primary keys
10. Number data type can hold both decimal and non-decimal digits
11. A row cannot be deleted from a B. Match the following
table in MS Access 2010
Answers
Answer:
6 true
7 true
8 false
9 true
10 true
11 false
a_______helps us to see the relationship between different parts of data
Answers
Answer:
Data label........
..
Create your multimedia presentation using software for the format you chose. Be sure to organize your content into an introduction, body, and conclusion section. Also make sure you review your work. Then answer this question: What are the main sections of your presentation?.
Answers
The main sections of the presentation include the Introduction, Body, and Conclusion.
The Introduction sets the stage for the presentation, the Body contains the main content with supporting information, and the Conclusion summarizes the key points and provides a closing statement. As an AI text-based model, I don't have direct access to create or use software for multimedia presentations. However, I can provide you with an outline of the main sections that you can include in your presentation:
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Which of the follow efficiencies would be considered unreasonable?
Answers
Answer:
Exponential or factorial efficiencies algorithms
Explanation:
In a computer engineering system, the efficiencies that would be considered unreasonable is the "Exponential or factorial efficiencies algorithms"
This is unlike Algorithms with a polynomial efficiency that is considered to have Reasonable Time.
Suppose your company has leased on Class C license, 220.10.10.0, and want to sublease the first half of these IP address to another company. What is the CIDR notation for the subnet to be subleased
Answers
The CIDR notation for subleasing the first half of the Class C IP address 220.10.10.0 is 220.10.10.0/25.
The Class C IP address range consists of 256 addresses (from 192.0.0.0 to 223.255.255.255), and it is divided into 4 octets. In this case, the given IP address is 220.10.10.0.
To determine the CIDR notation for subleasing the first half of this IP address, we need to find the subnet mask that includes half of the addresses. Since there are 8 bits in the last octet (from left to right: 128, 64, 32, 16, 8, 4, 2, 1), the first half of the addresses would require 7 bits to represent them (from 128 to 1).
To represent these 7 bits in the subnet mask, we set them to '1', which gives us a subnet mask of 255.255.255.128. When we combine this subnet mask with the given IP address, we get the CIDR notation of 220.10.10.0/25.
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The Fed: decreases the money supply when the economy contracts. performs banking services for commercial banks in districts where it operates. calculates the expected expenditure for the federal government every year. outlines expected revenue that is due from the collection of taxes and fees.
Answers
Answer:
performs banking services for commercial banks in districts where it operates.
Explanation:
The Federal Reserve System ( popularly referred to as the 'Fed') was created by the Federal Reserve Act, passed by the U.S Congress on the 23rd of December, 1913. The Fed began operations in 1914 and just like all central banks, the Federal Reserve is a United States government agency.
Generally, it comprises of twelve (12) Federal Reserve Bank regionally across the United States of America.
Hence, the Fed performs banking services for commercial banks in districts where it operates, as well as providing services to the general public.
If your earning potential is higher than the cost of your higher education,
you will have a
Answers
Loans take for Higher education does have a positive ROI because you are building skills and work experience that can increase your future earnings.
If your earning potential is higher than the cost of your higher education,
you will have a positive return of investment.
The more education is linked with higher lifetime. Based on U.S. Bureau of Labor, college graduates earn an average of 61% more than non-college graduates.The likelihood of earning more income over the course of a lifetime with a college degree is the main factor in considering if or not to pursue a diploma.
The higher income that is gotten from a college degree is known as the "college wage premium."
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which category of system software provides a platform for application software to run on?
Answers
The Computing platform is the category of system software which provides a platform for application software.
Let understand that Software means some set of instructions on a computer which are used for operation and execution of specific tasks.
The different type of software include:
System Software: This is the software designed to provide platform for other software installed on the computer. Eg. Microsoft Operating system. Apple Operating System etcApplication Software: These are software which is installed on the system to perform function on the computer E.g. Chrome.When a laptop is running Windows as an Operating system, the platform its runs on is known as Computing platform.In conclusion, the computing platform (Operating system) is the category of system software that provides a platform for application software to run on.
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What is the web page path on the web server for the URL:
http://www.mydomain.com/main/index.html?
O http://
O www.mydomain
O main/index.html
O index.html
Answers
Answer:
C: main/index.html
Explanation:
in windows server 2012 r2, how many virtual machines can be utilized in a cluster?
Answers
In Windows Server 2012 R2, a cluster can support up to 64 virtual machines, but the actual number of virtual machines that can be utilized in a cluster depends on several factors.
Windows Server 2012 R2 is a server operating system that supports virtualization through its Hyper-V technology.
A cluster in Windows Server 2012 R2 is a group of servers that work together to provide high availability and failover for virtual machines.
The maximum number of virtual machines that a cluster in Windows Server 2012 R2 can support is 64.
However, the actual number of virtual machines that can be utilized in a cluster depends on various factors such as the resources available on the server, the workload of each virtual machine, and the network infrastructure.
For optimal performance and stability, it is important to properly plan and configure the virtual machines and the server cluster. This includes considering the server hardware, storage, networking, and virtual machine settings such as CPU, memory, and disk allocation.
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a(n) often uses prewritten hacking and cracking programs. a. hacker b. cracker c. script kiddie d. cyberextortionist
Answers
c. script kiddie
PLS HELP!!! BRAINLIEST
Would it be possible to design a large, complicated, high-quality object—like a car—that could be made completely by 3D printing?
Answers
Explanation:
it is possible i have seen it but the printers are really expensive
What are some real-life situations where multi-dimensional arrays might be useful?
Answers
If you think, there are many game application where you can use a Multi-dimensional array. If we talk about a game then chess is the first game where rows and columns are used. The Second is the tic-tac-toe game and other board games are there too.
There are a multitude of criminological theories outlined and discussed. The Criminology of Computer Crime. Choose two (2) theories that you believe explain the reason(s) and rationale that cause individuals to commit Cyber Crime and Cyber Terrorism. Explain the theories you have chosen and why these two (2) best describe the motives of Cyber Crime
Answers
The two theories that can help explain the motives behind cybercrime are the rational choice theory and the strain theory.
1. Rational choice theory suggests that individuals make decisions based on a rational calculation of the potential benefits and risks involved. In the context of cybercrime, individuals may be motivated by the perceived benefits of financial gain, power, or a sense of accomplishment. They weigh these potential benefits against the risks of detection and punishment.
2. Strain theory posits that individuals engage in criminal behavior as a result of societal strains or pressures. In the context of cybercrime, individuals might feel strains such as financial hardship, lack of opportunities, or social disconnection. They may turn to cybercrime as a means of alleviating these strains or achieving their goals.
These theories best describe the motives behind cybercrime because they highlight the rational decision-making process and the social factors that contribute to criminal behavior. By understanding these theories, we can gain insight into the underlying reasons why individuals commit cybercrimes.
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In which of the following ways are copyrights different from trademarks?
O It is not necessary to do anything to obtain a trademark, but a copyright must be approved.
O It is not necessary to do anything to obtain a copyright, but a trademark must be approved.
O Trademarked materials can be used under fair use laws, while copyrighted materials cannot.
OCopyrighted materials can be used under fair use laws, while trademarked materials cannot.
Answers
Evonka is listening to music from an online music provider (such as Pandora or Jango). She builds a list of music preferences, including favorite songs. The music service then suggests additional songs she might enjoy. The music provider is an example of a cloud-computing application that uses a technology for collaborative filtering, which helps define the list of songs available to listeners. Which term describes this technology?
Group of answer choices
Bit-Torrent
Grid Computing
Software as a Service
Crowdsourcing
Answers
Answer:
D. Crowdsourcing
Explanation:
Crowdsourcing can be defined as a collaborative process which typically involves completing a project (task) and solving a problem through a group of people (crowd) that are geographically dispersed over the internet.
Basically, crowdsourcing refers to an outsourcing technique which allows a project or task to be jointly completed by a group of people (crowd) such as volunteers or freelancers who are made to work remotely over the internet.
In this scenario, an online music provider such as Pandora or Jango uses crowdsourcing for collaborative filtering, which helps define the list of songs available to listeners.
list any six area where computer used
Answers
Answer:
I. Banking and finance.
II. Hospitals.
III. Schools.
IV. Defense and military.
V. Office.
VI. e-commerce.
Explanation:
A computer can be defined as an electronic device that is capable of receiving of data in its raw form as input and processes these data into information that could be used by an end user.
The central processing unit (CPU) is typically considered to be the brain of a computer system. It is the system unit where all of the processing and logical control of a computer system takes place.
Additionally, the component of the central processing unit (CPU) that controls the overall operation of a computer is the control unit. It comprises circuitry that makes use of electrical signals to direct the operations of all parts of the computer system. Also, it instructs the input and output device (I/O devices) and the arithmetic logic unit on how to respond to informations sent to the processor.
The six (6) areas in which a computer can be used are;
I. Banking and finance.
II. Hospitals.
III. Schools.
IV. Defense and military.
V. Office.
VI. e-commerce.
what must devices that communicate with one another on the internet have in common? group of answer choices be the same brand. use the same internet service provider. use the same internet protocols. be in the same physical location.
Answers
Option-C: Devices that communicate with one another on the internet must have the same internet protocols.
Devices that communicate with one another on the internet must have certain elements in common in order to connect effectively. The internet is a decentralized network, which means that it is not owned by any single organization, but rather is made up of interconnected networks operated by various companies and organizations. Devices that communicate with one another on the internet must have the same internet protocols. An internet protocol is a set of rules that govern how data is transmitted over the internet.
These protocols allow devices to communicate with one another, regardless of their location or the network they are using. In order for two devices to communicate on the internet, they must both be using the same protocols. This ensures that data can be transmitted and received correctly, and that the two devices can understand one another. Therefore, it is important that devices that communicate with one another on the internet must have the same internet protocols.Thus,the correct answer is Option-C:use the same internet protocols.
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A power supply is an electrical transformer that regulates the electricity used by the computer. Select one: A. False B. True
Answers
Answer:
The Answer is B
Explanation:
The power supply converts AC current to DC current and protects the P.C. hardware from being fried from electrical surges. So it regulates electricity.
which country has the most common features of analogue and digital computer
Answers
Explanation:
i don't think rhis question could be..
PLEASE HELP ME !!!!!!!!
Answers
Answer:
This is way to long
Explanation:
What is the output?
password = "sdf# 356"
>>> password. isalnum()
Answers
The output is False because the string password contains #.
Answer:
The answer is False.
Explanation:
The answer is false becasue it has other characters than letters and numbers.
Have a great day, I hope this helped.
help me pleasez thank you!!
Answers
We can fill up the blank spaces as follows:
The process of retrieving data is fetching.The process of storing data is Data storageThe event that a database administrator prevents from happening is BreachThe separator between a table and a column name is periodThe process of duplicating data is called redundancyAnother term for delete is remove or dropHow to fill up the blanksWith a basic understanding of data and computer science, we can fill up the blanks with the right words. In programming, another term that is commonly used in place of deletion is dropping or removing.
Also, it is the duty of most database administrators to prevent a breach from occurring. Duplication is also called redundancy.
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Vani is trying to connect a microphone to her laptop. What are the two way she can connect the microphone?
1. through Bluetooth
2. through HDMI
3. through USB-C
4. through DisplayPort
5. through modem card
Answers
Correct answer is "Through Bluetooth" and "Through USB-C"
explanation: Plato correct answer
Vani can connect a microphone to her laptop using the following two ways Through USB-C and Through Bluetooth. The correct option is option (1) and (3).
Through USB-C: Many laptops nowadays come with USB-C ports that support audio input/output. Vani can connect a microphone directly to the USB-C port using a compatible USB-C to 3.5mm audio adapter or a USB-C microphone.
Through Bluetooth: If Vani's laptop supports Bluetooth connectivity and the microphone she wants to use is Bluetooth-enabled, she can pair the microphone with her laptop wirelessly. This allows her to connect and use the microphone without any physical cables.
Therefore, Vani can connect a microphone to her laptop using the following two ways Through USB-C and Through Bluetooth. The correct option is option (1) and (3).
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Computers are commonly used to randomly generate digits of telephone numbers to be called when conducting a survey. Can the methods of this section be used to find the probability that when one digit is randomly generated, it is less than 3? Why or why not? What is the probability of getting a digit less than 3?
Answers
Yes, the methods of this section can be used to find the probability that when one digit is randomly generated, it is less than 3. So, the probability of getting a digit less than 3 when randomly generating a digit for a telephone number is 0.3, or 30%.
To calculate the probability, we need to determine the number of successful outcomes and the total number of possible outcomes. There are 10 possible digits for a single digit (0-9). Out of these, 3 digits are less than 3, which are 0, 1, and 2. So, the number of successful outcomes is 3.
The total number of possible outcomes is 10, as there are 10 digits to choose from.
Now, we can calculate the probability of getting a digit less than 3 by dividing the number of successful outcomes by the total number of possible outcomes:
Probability = (Number of successful outcomes) / (Total number of possible outcomes)
Probability = 3 / 10
Probability = 0.3
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Analyse and apply the elements that contribute towards a company’s online
Answers
1. Website Design: A company's website should be visually appealing, easy to navigate, and provide relevant information about the company and its products or services.
2. Social Media Presence: A strong social media presence can help a company connect with its audience and build brand awareness. It is important to choose the right platforms and create engaging content that resonates with the target audience.
3. Search Engine Optimization (SEO): SEO is the process of optimizing a website to rank higher in search engine results pages. This can be achieved through keyword research, on-page optimization, and link building.
4. Content Marketing: Content marketing involves creating and sharing valuable content that attracts and engages the target audience. This can include blog posts, infographics, videos, and social media posts.
5. Online Advertising: Paid advertising can help a company reach a wider audience and drive traffic to its website. This can include search engine marketing (SEM), display advertising, and social media advertising.
By utilizing these elements, a company can create a strong and effective online presence that helps it reach its target audience and achieve its business goals.
Ava and Elizabeth are planning on using an IDE to create their program. Describe tools and facilities available in the IDE which can help them to identify and correct syntax errors.
Answers
URGENT!!!! What is the concept of using the internet to trade goods and services called?
Answers
Answer:
barter
Explanation:
is the direct trade of goods, services and resources without the use of money
Answer:
e-commerce
Explanation:
just took the test, see pic below
text files containing standard zone information in windows utilize what file naming convention?
Answers
Text files containing standard zone information in Windows utilize the file naming convention with the ".dns" file extension.
In Windows, text files that contain standard zone information for DNS (Domain Name System) use the ".dns" file extension as their naming convention. DNS is a fundamental component of the internet infrastructure that translates domain names into IP addresses, allowing users to access websites and services by their domain names.
The ".dns" file extension signifies that the file contains DNS zone information, which includes records such as A records (mapping domain names to IP addresses), MX records (specifying mail servers for a domain), NS records (defining authoritative name servers), and more. These zone files are commonly used by DNS servers to resolve domain name queries and provide accurate IP address information.
By following the ".dns" file naming convention, Windows ensures that DNS zone files can be easily identified and associated with their purpose. This naming convention helps administrators manage and configure DNS zones effectively, allowing for efficient domain name resolution within the Windows operating system
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