which of the these best applies occam's razor select one: a person declares

Answers

Answer 1

Occam's Razor is a principle that states that when there are multiple explanations for a phenomenon, the simplest one is usually the correct one.

It is a tool used to guide scientific and logical inquiry, and it suggests that unnecessary complexity should be avoided in favor of simpler explanations.

In many cases, Occam's Razor can be applied to help us determine the most likely explanation for a particular phenomenon.

For example, in science, it is often used to choose between competing theories that can explain the same observations.

The theory that requires the fewest assumptions and the simplest explanation is usually the preferred one.

However, it is important to note that Occam's Razor is not a strict rule and does not guarantee the correct answer in every case.

There may be situations where the simplest explanation is not the correct one, or where additional complexity is necessary to explain a phenomenon fully.

Therefore, while Occam's Razor is a useful tool, it should not be used dogmatically and should always be considered in conjunction with other evidence and reasoning.

To know more about Occam's Razor refer here

brainly.com/question/30640072#

#SPJ11


Related Questions

The Lone Star Republic is the modern state of __________.

A) Indiana

B) New Mexico

C) Texas

Answers

Answer:

texas

Explanation:

according to george w. bush's 2002 address to the united nations general assembly, u.s. foreign policy goals in the middle east:

Answers

According to George W. Bush's 2002 address to the United Nations general assembly, few of the US foreign policy goals in the middle east are as follows

US Withdrawal from the Anti-Ballistic Missile Treaty.

The downfall of Panamanian leader General Manuel Noriega.

Focuses on America's bygone days while intervening on the edge of 1898.

US invasion of Panama to overthrow the local dictator.

Consequences of policy were The Gulf War, Bush led a large coalition that defeated Iraq following its Invasion of Kuwait, but letting Saddam Hussein to remain in power.

To learn more about George W. Bush, here:

https://brainly.com/question/9785666

#SPJ4

Good opportunities for step parents

This isn't for Social Studies! ​

Answers

What? Do you need help on something?

name two national project launched in nepal and how are they going to help people

Answers

Answer:

Sikta Irrigation project                                                                                                    Babai Irrigation project

Just like your phone uses a battery for energy, your cells also require energy to work. Do you know what this energy is called?

A.
ATP
B.
DNA
C.
Glucose

Answers

Answer:

C

Explanation:

Option A Cells energy called ATP.

What is ATP?

ATP exists for adenosine triphosphate. An ATP molecule contains ahead Adenosine Triphosphate sugar and a tail of three phosphate groups. Energy exists stored in the bonds between phosphate groups, so when your body requires energy, it breaks off some phosphate and radiates energy to the immediate environment. ATP stands made in the mitochondria, which stand the organelles in the cell where cellular respiration takes place. This exists why mitochondria are often directed to as “the powerhouse of the cell”.

The correct answer exists in option A.

Learn more about ATP, refer:

https://brainly.com/question/897553

#SPJ2

Developmental theories attempt to provide a natural history of criminal careers by encompassing ______.

Answers

Answer:

Developmental theories attempt to explain the natural history of a criminal career encompassing its onset, continuation, and termination.

identify three issues that these laws were designed to address. using current news sources identify one issue the country is still working to solve.

Answers

The issues that these laws were intended to address are as follows Segregation and Discrimination.

The laws that were designed to address the United States’ history of racial segregation and discrimination are the Civil Rights Act of 1964, the Voting Rights Act of 1965, and the Fair Housing Act of 1968.

The issues that these laws were intended to address are as follows:

Segregation: This refers to the practice of separating people of different races in public spaces and facilities, such as schools, buses, and restrooms. The Civil Rights Act of 1964 outlawed segregation in these public places.Discrimination: This refers to treating people unfairly based on their race, ethnicity, gender, religion, or other personal characteristics.

The Civil Rights Act of 1964 prohibited discrimination in employment, education, and other areas.Voting rights: This refers to the right to vote and to have equal access to the voting process, regardless of race.

The Voting Rights Act of 1965 protected this right and made it easier for African Americans to register to vote and participate in the political process.One issue that the United States is still working to solve is voter suppression. Many states have passed laws in recent years that make it more difficult for people to vote, especially minorities and low-income individuals.

This has included measures such as strict voter ID requirements, cutting back on early voting, and closing polling places in certain areas. These efforts to suppress the vote are seen by many as a violation of the principles of democracy and equality that the Civil Rights Act and Voting Rights Act were designed to protect.

Learn more about Discrimination: brainly.com/question/1084594

#SPJ11

identify three issues that these laws were designed to address. Using current news sources, identify one issue the country is still working to solve. The Jim Crow laws were created to suppress African Americans’ rights in the United States after the Civil War. The term “Jim Crow” comes from a song and dance routine performed by a white comedian, Thomas Dartmouth Rice, who painted his face black and spoke in a caricatured African-American accent. The Jim Crow laws were finally abolished in 1965 with the passage of the Voting Rights Act and the Civil Rights Act.

However, several issues were addressed by the laws:

1. Segregation: The Jim Crow laws enforced segregation in schools, housing, restaurants, transportation, and public spaces. This means that blacks were not allowed to use the same facilities as whites. There were separate drinking fountains, restrooms, and waiting rooms.

2. Discrimination: The Jim Crow laws allowed employers to discriminate against African Americans. Blacks were usually given low-paying jobs with long hours, and there were no chances for advancement. African Americans were not permitted to join labor unions.

3. Voting Rights: African Americans were not permitted to vote in many parts of the country. It was challenging for blacks to register to vote because they had to pay a poll tax and pass a literacy test. Blacks who attempted to vote were often threatened with violence and harassment.

Today, the United States is still working to address issues such as police brutality and institutional racism. The death of George Floyd, who was killed by a police officer in Minneapolis, Minnesota, in 2020, sparked nationwide protests for justice and racial equality. The United States has made some progress in addressing these issues, but there is still much work to be done.

To know more about the Voting Rights Act, visit:

https://brainly.com/question/30806459

#SPJ11

leslie was given several different brightly colored balls to play with, one after the other. after ball number nine, leslie seemed to lose interest in playing. when she was then given a stuffed animal, she showed renewed interest. this renewed interest is due, in part, to which of the following? group of answer choices categorizing schematograms reinforcement superordinates

Answers

Answer: The renewed interest in the stuffed animal after losing interest in the brightly colored balls may be due to a change in the type of stimulus that Leslie is being presented with. When Leslie was given the stuffed animal, it may have been a new and different type of toy for her to play with, which may have increased her interest and curiosity. This change in stimulus could be considered a form of reinforcement, as it may have strengthened Leslie's behavior of showing interest in new and different stimuli.

Explanation:

which of the following is a true statement?question 1 options:a. the concept of catharsis is supported by research findings. b. green spaces increase neighborhood violence.c. researchers all agree that media violence strongly predicts increases in aggression.d. men are higher on all forms of aggression.e. none of the statements above are true. all are false.

Answers

The correct option is e. None of the statements above are true. All are false.

Explanation:

a. The concept of catharsis, which suggests that engaging in aggressive behavior or consuming violent media can reduce aggression, is not supported by consistent research findings. In fact, research suggests that aggressive behavior or exposure to violent media can actually increase aggression.

b. Green spaces are generally associated with positive effects on neighborhood well-being, including reducing violence. They provide opportunities for recreation, relaxation, and community engagement, which can contribute to a safer and more peaceful environment.

c. While there is evidence to suggest that exposure to media violence can have some effect on aggression, it is not accurate to state that researchers unanimously agree that media violence strongly predicts increases in aggression. The relationship between media violence and aggression is complex and influenced by various factors.

d. It is not accurate to claim that men are higher on all forms of aggression. Aggression can manifest differently in individuals and is influenced by various factors such as biological, social, and cultural factors. It is not solely determined by gender.

Therefore, the correct statement is that none of the statements above are true. All of the options presented are false.

learn more about concept here:

https://brainly.com/question/29756759

#SPJ11

What continent is at 20n and 60e

Answers

Answer:

There exists no country at 20N, 60E. Instead, it is the location of the Indian Ocean.

However,

20N, 20E is Chad;

20N, 80E is India;

40N, 60E is Turkmenistan.

These are the closest to the location you have provided.

Which is NOT a branch of the Federal Government?

a
Executive
b
Legislative
c
State
d
Judicial

Answers

Answer:

c) Estatal

Explanation:

:)

Kiki and Natalie do some more research and find that the southern portion of the Rub al-Khali Desert in Saudi Arabia gets an average of 0.6 inches of rainfall per year, and the Gobi Desert of China and Mongolia gets an average of 0.78 inches. Kiki draws a model to represent the annual rainfall in the Rub al-Khali Desert. Natalie draws a model to represent the annual rainfall in the Gobi Desert. Their models are shown here.

Answers

\(\Huge\green{\tt{✏Answer✏}}\)

Where is the models my friend?

\(\Huge\blue{\tt{✏Explanation✏}}\)

#CarryOnLearning

hit that heart and dont forget to follow hehe thx<3

\(\color{blue}{⊱─━━━━━━━━⊱༻●༺⊰━━━━━━━━─⊰}\)

\(\huge{꧁༒Maizen༒꧂}\)

abundant data have been collected on hearing and hearing loss in teens. researchers have also used surveys to find out about the level of noise exposure among teens, including use of personal listening devices, attendance at concerts, and time spent in nightclubs. a researcher thinks there probably is a cause-effect relationship between noise exposure and hearing loss in teens. if the researcher is interested in analyzing data to test this idea, what would be a logical next step?

Answers

If the researcher is interested in analyzing data to test this idea, they should look into whether teens who experience more noise also have more hearing loss.

A serious, frequently ignored health issue is noise-induced hearing loss. School settings include a variety of noisy learning environments and activities. Three out of every four teenage students claim to have experienced loud noise at school, and nearly half (46.5%) say they do so frequently. Most students, however, claim that their school did not offer hearing protection or teach preventive methods to lessen their risk of long-term noise-induced hearing loss. The prevention of noise-induced hearing loss in children of school age is possible with the help of educators and healthcare professionals. It is possible to prevent or lessen noise-induced hearing loss by raising youths' awareness of the detrimental health effects of excessive loud exposure and easy preventive measures to lower risk.

To know more about hearing loss

https://brainly.com/question/18548045

#SPJ4

According to the reading on the aging paradox, what are some possible explanations for the aging paradox? Select all that apply. a Age-related cognitive declines prohibit older adults from processing negative emotions b Age is associated with an increase in risk factors for mental health c Older people may have more wisdom due to their life-long experiences Y
d Younger adulthood is generally a more stressful time than older adulthood e Older people are less responsive to stressful images than younger people

Answers

According to the reading on the aging paradox, some possible explanations for the aging paradox are c. Older people may have more wisdom due to their life-long experiences and e. Older people are less responsive to stressful images than younger people

The aging paradox refers to the phenomenon where older adults experience better mental health outcomes despite facing more physical and cognitive declines as compared to younger adults. This paradox has been observed in several studies, and there are various possible explanations for this phenomenon.

One possible explanation is that older people have accumulated more life experiences and developed coping mechanisms that help them deal with stress and negative emotions better than younger adults. This increased wisdom and experience may help them put stressful events into perspective and manage their emotions better.

Read more about paradox here:

brainly.com/question/17731343

#SPJ11

What is the purpose of calculating inferential statistics? To calculate the range of data To determine if differences between groups are significant To identify the middle value in a set of data To identify which outliers to throw out from a set of data To know the average score

Answers

Answer:

To determine if differences between groups are significant

Explanation:

To determine if differences between groups are significant is the purpose of calculating inferential statistics. Thus, the option (b) is correct.

What is statistics?

The term statistics are the part of the economics. The statistics are the collection of the data, information are the filed in the tabulation format and the interpretation of the numerical data. There are the four basic elements of the population, sample, parameter, sample, and variable.

The inferential statistics are the observation and experiment of the particular group or sample. The basis for predictions is the entire process. The inferential statistics are used to demonstrate the significance of the differences between groups. To the sample study and the significance to the large group.

As a result, inferential statistics are the purpose of the differences between groups are significant. Therefore, option (b) is correct.

Learn more about on statistics, here:

https://brainly.com/question/23091366

#SPJ6

Since Shays's Rebellion was over local issues in Massachusetts, it had no effect on the decision to call the Constitutional Convention.

O True
O False

Answers

Answer:

False

Explanation:

The Constitution Party was already planned however there was still people who didn't neccessarily feel motivated or didn't really believe that this was so vital for the country. Yes, a ton of people looked it at and were concerned, although when people began revoluting then many members took the matter much more serious.

how did the Aryan way of life change when they migrated away from their Homeland ​

how did the Aryan way of life change when they migrated away from their Homeland

Answers

Answer:

I think its d sorry of it dies help

Explanation:

Answer:

so its not d but its c (The Aryan people had a history of trading across long distances, and they traded less after migrating)

Explanation:

but if its not plz let me know ill change my answer

you are afraid of spiders. you see a tarantula in a cage at the tucson zoo, but you don't feel afraid. this reaction supports which theory of emotion?

Answers

The fact that you see a tarantula in a cage at the Tucson Zoo but do not feel afraid, despite having a fear of spiders, supports the two-factor theory of emotion.

The two-factor theory of emotion suggests that emotions are composed of two factors: physiological arousal and cognitive interpretation. According to this theory, when a person experiences an emotion, they first experience physiological arousal, which is then interpreted cognitively to produce the emotional experience.

In the given scenario, the sight of the tarantula in the cage produces physiological arousal but the cognitive interpretation of the situation leads to a lack of fear.

Learn more about two-factor theory here:

https://brainly.com/question/30051197

#SPJ4

according to conflict theory, what is the real source of racism?

Answers

According to conflict theory, racism is a result of power struggles between different groups in society.

The real source of racism is rooted in the unequal distribution of power and resources among different racial groups. The dominant group, which holds more power and resources, uses racism to maintain their position of dominance and to suppress and exploit minority groups.

Racism serves as a tool for the dominant group to justify their privileged position and to maintain the status quo. This can be seen in various institutions, such as education, employment, and the criminal justice system, where systemic racism persists.

Conflict theorists argue that ending racism requires a fundamental change in the power dynamics of society and the redistribution of resources to create a more equitable and just society.

To know more about racism refer here: 

https://brainly.com/question/2864094

#SPJ11

Which of the following nations' government has a unicameral legislature?
A.
Mexico
B.
Cuba

C.
United States
D.
Brazil

Answers

Answer:

C

Explanation:

United States is one of the government that practiced unicameral legislature

i am about to cry someone, please help
just fill in the rest of the blanks



To determine whether a government is limited or unlimited, you could look at how each government handles the power. In a limited government, leaders are elected by the country's citizens, and if the people don't agree with the decisions of their leaders, they can reelect or replace the representative. An example of a country with a limited government is United states, south Korea, Kenya, and their head of government is called ________. In an unlimited government, citizens are rarely allowed to have a say in government decisions. And if there are elections, most of the candidates ________________________________. An example of a country with a unlimited government is Azerbaijan, peoples republic of China, Russia, and their head of government is called_________. In conclusion, there two forms of government are different because__________.

Answers

https://accessdl.state.al.us/AventaCourses/access_courses/government_ua_v17/01_unit/01-02/01-02_learn1_text.htmAnswer:

Explanation:

Answer:

its late but i got you

Explanation:

To determine whether a government is limited or unlimited, you could look at how each government handles the power. In a limited government, leaders are elected by the country's citizens, and if the people don't agree with the decisions of their leaders, they can reelect or replace the representative. An example of a country with a limited government is United states, south Korea, Kenya, and their head of government is called a president/ prime minister. In an unlimited government, citizens are rarely allowed to have a say in government decisions. And if there are elections, most of the candidates have similar ideologies, will lose in a rigged election to the existing leader, or are from the same party as the current leader. An example of a country with a unlimited government is Azerbaijan, peoples republic of China, Russia, and their head of government is called a dictator. In conclusion, there two forms of government are different because authoritarianism and liberalism are inherently different in scope, ideology, and structure making them impossible to group together.

culture refers to an individual life style. group of answer choices true false

Answers

False.

Culture does not refer solely to an individual's lifestyle.

Culture encompasses a broader set of shared beliefs, values, customs, traditions, behaviors, and artifacts that are transmitted across generations within a particular group or society. It includes aspects such as language, religion, social norms, cuisine, music, art, and more.

While an individual's lifestyle can be influenced by their cultural background, culture extends beyond the individual level and encompasses the collective patterns of behavior and meaning-making within a group or society. Culture is a shared phenomenon that shapes and influences the thoughts, actions, and identities of individuals within that cultural context.

For more questions on culture:

brainly.com/question/514395

#SPJ11

In a
Senate.
election, citizens vote for candidates to represent them in the U.S.
A federal
B. state
C. local
D. primary

Answers

Answer:

A

Explanation:

Choose the word or phrase that best completes each sentence.
Johannes Gutenberg's most important invention was
This invention made it easier, quicker, and cheaper to
Because of this invention, more people learned to
More people now
for themselves.

Choose the word or phrase that best completes each sentence.Johannes Gutenberg's most important invention

Answers

Answer:

Johannes Gutenberg’s most important invention was the printing press.

This invention made it easier, quicker, and cheaper to produce texts and images.

Because of this invention, more people learned to read.

More people now read and interpreted the Bible for themselves.

Choose the word or phrase that best completes each sentence.Johannes Gutenberg's most important invention

His important invention was the printing press which made easier to produce texts and images and encourage more people learned to read..

What are the correct drop menus?Johannes Gutenberg’s most important invention was the printing press.

This invention made it easier, quicker, and cheaper to produce texts and images.

Because of this invention, more people learned to read.

More people now read and interpreted the Bible for themselves.

Therefore, the word "printing press", "produce texts and images", "read" and "interpreted the Bible" is the correct drop menur.

Read more about Johannes Gutenberg

brainly.com/question/3598970

In your opinion, 1) does imperialism fuel industrialization or 2) does
industrialization fuel imperialism, or 3) do imperialism and industrialization
have a symbiotic relationship? Explain your answer choice using sound
reasoning and historical examples.

Answers

Yes, does imperialism fuel industrialization.  Imperialism and industrialization have a symbiotic relationship. Imperialism allowed for the acquisition and control of resources and markets that fueled industrialization, while industrialization provided the means to expand and maintain imperial power through military and economic means.

Historical examples include European colonization and the exploitation of resources in colonies, as well as the expansion of European industrial power through the control of trade routes and markets in Asia and Africa.

What is the industrialization about?

Imperialism and industrialization are two historical phenomena that are often interrelated. One perspective is that imperialism fueled industrialization, as imperial powers such as Britain, France, and Germany sought to extract resources and markets from their colonies to fuel their own industrial expansion. This colonial exploitation allowed these imperial powers to expand their economies and further industrialize.

Therefore, Another perspective is that industrialization fueled imperialism, as the growing industrial economies of these nations required new markets and resources to sustain their growth. This led to territorial expansion and colonization as countries sought to secure these resources and markets.

Learn more about imperialism from

https://brainly.com/question/472625

#SPJ1

the style of policing where an officer who approaches a greoup of teenagers drinking beer checks everyones id and arrest everyone who is underage whould be

Answers

Answer:

The correct answer is - law enforcer.

Explanation:

Law enforcer is a style of policing that is emphasizing on the acts on the violation of law and crime and arrests the threats and make actual arrests on breaking the law.

Checking underage teenagers for drinking asking for their ids and take them in custody if found underage is one of the examples of law enforcers. These are one of the four types of style of policing.

What waterway and its tributaries did the French explore and claim?

Answers

Explorers had claimed the Mississippi River and its tributaries for France. By the 1750s the French had settlements in Canada, the “Illinois” country in what is now the mid-west, and Louisiana (New Orleans and land west of the Mississippi River.

In the early sixteenth century, it joined the race to explore the New World and exploit the resources of the Western Hemisphere. In 1534, navigator Jacques Cartier claimed northern North America for French, naming the area around the St. Lawrence River New France.

Besides expanding the fur trade, the French wanted to find a river passage across North America (for a trade route to Asia), explore and secure territory, and establish Christian missions to convert Native peoples.

Learn more about French here

https://brainly.com/question/15676473

#SPJ4

the flag representing the independent republic of fredonia has two parallel bars red and white symbolizing an alliance between the native Americans and the anglo settlers true or false?​

Answers

Answer:

False.

Explanation:

BTW I love how your giving out more than 5 points UNLIKE EVERYONE.

Anyways, Thanks!

Answer:

it is false

Explanation: it symbolised ¨Independence, liberty and justice!¨

________ refers to working closely with people inside and outside the company to jointly bring more value to customers.

Answers

Collaboration refers to working closely with people inside and outside the company to jointly bring more value to customers.

Collaboration is the process of actively cooperating and working together with individuals both within and outside the company to achieve shared goals and enhance customer value. It involves forming partnerships, alliances, or cross-functional teams to leverage diverse skills, knowledge, and resources.

By collaborating, organizations can tap into different perspectives, expertise, and networks to develop innovative solutions, improve processes, and deliver superior products or services to customers. Collaboration promotes effective communication, coordination, and cooperation among stakeholders, fostering a culture of teamwork and shared responsibility.

To know more about stakeholders

https://brainly.com/question/30241824

#SPJ11

Which of the following is an example of an economic institution?

A.
the Muslim Blue Mosque

B.
Lafayette College

C.
Department of Health

D.
Barone Accounting LLC

Answers

Answer:

B.

Lafayette College

Hope it helps

Option D. Barone Accounting LLC is an example of an economic institution.

An economic institution is an institution, an agency, or a foundation that makes collections and studies of the economic data of a country. It can either be a private or public institution, as long as it provides service that is important for the economy of the country.

The Barone Accounting LLC is a firm that deals with accounting and provides financial services. This institution provides excellent client services with its highly qualified team and a high-class hands-on approach. The Muslim Blue Mosque is a mosque and not an economic institution. Lafayette College is an academic institution. The Department of Health is a sector of the government that provides health services.

An economic institution, as the name suggests, is bound to provide services or deal with economic issues. And in that regard, Barone Accounting LLC is the only example among the given options that is correct. Thus, the correct answer is option D.

Learn more about economic institutions here:

brainly.com/question/4230044

Other Questions
What different types of labor did civilizations such as China, India, Greece, and Rome use in the classical period? what two bodies of water form a key transportation route connecting the interior of Canada to the Atlantic Ocean? and its science. Lines l and m are parallel and a and b are parallel. Find the measure of angle 10 if measure of angle 1 is 62.please help In the chapter titled "the fifty, the navy claimed that unreasonable and irrational fear was the reason the black sailors refused to load ammunition. what other factors led to the decision to not work? The Maya civilization was an important Mesoamerican civilization because it:A) proved that one empire could unite all of mesoamericaB) introduced the idea that there was only one godC) used hieroglyphics to record historical informationD) destroyed all the largest pyramids in the region Explain TWO reasons why it is important for the company to invest in the knowledge project. ( provide the reasons and explain the reasons and also provide examples for each reason ) What, if any, variations from the standard English pronunciation or accent do you hear in your regional dialect? Does your family share the dialect of the speakers from your region? A- My familys accent is different from that of most speakers from my region. The speakers from my region sound very similar to the people in my neighborhood. It was difficult to identify variations from standard English in my own regions dialect. My regions dialect is distinct, and I could identify variations in pronunciation and accent. Which argument about school uniforms would most likely appeal to an audience of taxpayers 1/2 x 3/5 + 3/4 / 7/8 + 4/5 x 2/1 Which answer choice has the least negative connotation?DeviousSchemingDeceitfulUntrustworthy based on this arrhenius plot, what is the activation energy of the reaction? (r = 8.314 j/k mol) cules nmeros naturales son 63 y 71 After reviewing the results of a math test, the teacher tells the class that those students who completed their review worksheets scored an average of 10 points higher on the test than those students who did not complete their review worksheets. Which of the following best describes how the teacher likely came to this conclusion? Find the Mean of the data set 3,3,4,5,6,7,7 Why is Mathilde dismayed when her husband shows her the invitation to the ball at the palace of the Ministry in "The Necklace"?A.) She thinks the people who will be at the ball will be unfriendly to her.B.) She has nothing appropriate to wear to the formal ball.C.) She thinks the people who will attend are beneath her class.D.) She becomes nervous and anxious when she is in large crowds.I'm not very good at ELA T-T examine the image and select the statements that correctly describe this molecular depiction. the squiggly arrows pointing toward the interior of the container imply heat is added to the gas. how many people will hit 2 of 4 pitches out of 120 people? How to show 12.8 x 1/4 MC Qu. 20-98 (Algo) Assume the demand for automobile... Assume the demand for automobile tires is unitary elastic and that the supply is unitary elastic. The burden of a $2 excise tax on each tire will be Multiple Choice borne by resource suppliers that provide the inputs for manufacturing tires bome primarily by sellers of tires a shared about equally by buyers and sellers of tires. bome primarily by buyers of tires MATH CHALLENGE:If the quotient of 8/13 and 2 is subtracted from the product of 7/4 and 8/21 what is the difference?