Một ô tô di chuyển từ A và đến B trong 5 giờ, trong đó, 2 giờ đầu di chuyển với tốc độ 50km/h và 3 giờ tiếp theo sau di chuyển với tốc độ 30km/h. Tính vận tốc trung bình trên toàn đoạn đường AB của ô tô ? A. 45 km/h. B. 38 km/h. C. 47 km/h. D. 32 km/h.

Answers

Answer 1

Answer:

b

Explanation

2h đầu đi được 100km

3h sau đi được 90km

=> AB = 190km đi trong 5h

vận tốc trung bình = 190/5=38km/h


Related Questions

how did robert frost sum up everything he learned about life

Answers

He said “it goes on”. That’s how he chose to sum up everything he learned about life.

what type of figurative language is “we’d have to be hermits for the rest of our lives”?

Answers

Explanation:

I believe it would be a hyperbole

Answer:

I am truly positive it is hyperbole.

Explanation:

I say this because the sentence (“we’d have to be hermits for the rest of our lives”) uses exaggerated statements. I really hope this helped :)

Write the poem of soft Storm​

Answers

Answer:

Explanation:

there will be another storm

a warning from heaven's above

clouds filled with water

mirage fades its shapes......

king cloud brings heavy rain

pour onto the princess heart

golden tears fill the air

inspire nature all at once

a soft voice........a hunger beast

a laud laugh........a humble cry

where is peace?.......where it be?...

can i see it in your eyes?

Lisa was surprised to see that her sister thought taking the students to the maze was a great idea. "Aren't you the thoughtful one?" she asked, failing to hide her irritation at the suggestion. "What if someone gets lost, stuck, and scared? I teach second graders!"
"Aren't you going to be with them?" Livy asked. "I thought kids liked playing hide-and-seek type of games.
"Not with 20 of them at once!" Lisa said, dismissing the maze idea immediately. "It is not hide-and-seek, Livy. It is a maze!"

How is Lisa's remark "Aren't you the thoughtful one?" an example of verbal irony?
A.
Lisa is actually mocking Livy's suggestion.
B.
Lisa is seriously questioning Livy's motive.
C.
Livy actually happens to be thoughtful.
D.
Livy is going to help Lisa with the kids.

Answers

Answer:

Lisa is actually mocking Livy's suggestion.

Explanation:

Which of the following sentences contains a present perfect verb?
This voting location will open at 7:00 A.M.
Mrs. Alvarez is serving as an election inspector.
She has assisted voters in District 2 for many years.
This year, my cousin Deshawn will be voting for the first time.

Answers

The sentence that contains a present perfect verb is: She has assisted voters in District 2 for many years.

The present perfect tense is formed by combining the verb to have/has and the past participle of the main verb in the sentence.

In the third option given, the combination of "has" and "assisted" helps in forming the present perfect tense of the sentence. Thus, option C is correct.

Learn more about the present perfect tense here:

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debate of smartphone (should smartphone be banned in class?

Answers

Answer:

yep,the smartphone should be absolutely banned because the school is for only reading and learning.

Read the excerpt below and answer the question.

He made her get upon the stool, and tied her hands to the hook. She now stood fair for his infernal purpose.

Which word is closest in meaning to the word "infernal"?

A. fiery
B. wicked
C. annoying
D. unpleasant

Answers

B. wicked

That is a very disturbing passage

What, if anything, makes the following thesis statement weak?

When the protagonist of Henry James's The Portrait of a Lady, Isabel Archer, finds herself confronting swindlers eager to scam her out of her fortune, the plot reveals the author's mistrust of "new world" values over "old world" traditions, raising questions about the future of society.

a) It does not address meaning, or the "so what?"
b) It fails to provide a rationale for the position.
c) It is not arguable or defensible.
d) It is not specific.
e) Nothing; this thesis statement is effective.

Answers

Answer:

A

Explanation:because i did this question

It does not address the meaning, or the "so what?"   makes the following thesis statement weak. Thus, option A is correct.

What is a thesis statement?

A thesis statement is just a phrase that summarizes the subject's overall aim for creating an essay. A strong thesis statement would guide the essay's structuring as well as help the readership comprehend the suggestions you'll be talking about in the article.

In this statement the protagonist refers to at that when the people are trying to cam him to various listening taken by the people. It tells how it is necessary that in the New World the people should not trust one another and how the old world has reduced as well as how they used to live.

But it does not tell of how what the people did as well as how often the people were scamming and in what ways. Therefore, option A is the correct option.

Learn more about thesis statement, here:

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#SPJ2

-write a formal letter of apology to your school principal for an incident that you were involved in. In your letter:
-state what the incident was
-show how it wasn’t your intention to cause trouble
-apologise for what happened
Your letter should be 50- 70 words and can go up to 100 words

Answers

There are important differences and similarities in barriers to early diagnosis of breast cancer between Black African, Black Caribbean and White British women in the UK. Differences were influenced by country of birth, time spent in UK and age. First generation Black African women experienced most barriers and longest delays. Second generation Black Caribbean and White British women were similar and experienced fewest barriers. Absence of pain was a barrier for Black African and Black Caribbean women. Older White British women (≥70 years) and first generation Black African and Black Caribbean women shared conservative attitudes and taboos about breast awareness. All women viewed themselves at low risk of the disease, and voiced uncertainty over breast awareness and appraising non-lump symptoms. Focus group findings validated and expanded themes identified in interviews.

On the weekend you purchase a Samsung Galaxy Tablet at a Digicel store in Montego Bay. The store clerk tried it and it was working just fine. However, you took it home and used it twice, then the screen went blank. Write a letter of Complaint to the Manager of Digicel​

Answers

The above question wants to analyze your writing ability through a letter. For that reason, it is not right for me to write this letter to you, but I will show you how to write it.

First, you should know that a letter of complaint must be confidently written, yet polite. Complaints should be made clearly and calmly, without offending or mistreating anyone, just explaining what happened.

Also, it is important to keep the language more formal, as this letter will be read by people you are not familiar with.

After that, you can write the letter as follows:

Start with a greeting, which can be "To whom It May Concern," or "Dear Mr./Mrs ____" if you know the name of the person who will read your letter.Introduce yourself and say why you are writing the letter.Present your complaint, politely and calmly.Show the need for some action to be taken.Say goodbye cordially.

More information about letter of complaint :

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write a literary analysis of the princess and the goblin by george macdonald

Answers

Answer:

She becomes more golables trusting and sibeled

One of the most successful and beloved of Victorian fairy tales, George Macdonald's The Princess and the Goblin tells the story of young Princess Irene and her friend Curdie, who must outwit the threatening goblins who live in caves beneath her mountain home.

Explanation:

I HOPE THIS HELPS!!!!

English language paper 1 question 5
Please help me it’s due tomorrow.

Answers

Answer:

hahaha i do not miss english gcse

maybe use a metaphor for the whole essay of nature. Or a metaphor that the train is entrancing the people to join it like they are in a trance and they are are incapable of escaping societies expectation of work

Explanation:

It was crowds the running giants slammed down the pathway. There was no hope but to run to the train. It rain faster than I could the flashy wind swearing through my face resisted me from entering the train. There it was the train towards Hamilton. My only hope.

Many employers don't focus on an applicant's job skills. Instead, they say the most important thing is _____. A. The perfect résumé b. The best previous work experience c. New shoes d. The right attitude Please select the best answer from the choices provided A B C D.

Answers

Answer:

B

Explanation:

Because what counts the most is the employee's past experience, if she or hee is well experienced, they're most likely to bring about the most change to the company

Many employers don't focus on an applicant's job skills. Instead, they say the most important thing is:

d. The right attitude

We can see that option D is the correct answer.

It's very obvious today that employers are not too keen on skills but are actually looking out for employees with the right attitude.

Employers are very much aware that if employees have the right attitude towards their jobs, they will be more productive.

Thus, Option D is the correct answer.

Learn more about The Right Attitude on https://brainly.com/question/1146598

How does the author develop the idea that teaching English abroad is a valuable pursuit?

Answers

Answer choices for the above question

A. by describing the benefits for the teacher and then describing the benefits for the community

B. by listing the simple steps involved in obtaining a teaching certificate and finding a job

C. by relating the experience of a teacher who taught overseas and loved it

D. by explaining the many advantages and few disadvantages of teaching abroad

9. "Ultima's owl gave the warning that the time of peace on our hill was drawing to an end," (Rudolfo 15). How does this quote provide foreshadowing?

Answers

Answer:

It provides foreshadowing because the owl gives a warning that the peace would soon end.

The Men That Don’t Fit In by Robert Service and The Rebel by D.J

How is the theme of both poems similar or different?

Answers

Answer:

Both poems feature individuals who stand out from or are somehow distinct from the general populace. They aren't following the bulk of the population. They don't fit in with their surroundings. Furthermore, they don't endanger anybody.

Would there be a market today for such a system? Why or why not?

Answers

Answer:

hopefully this will help

Explanation:

Just as a worrying new variant of the coronavirus has begun to spread, the Federal Reserve chair signaled on Tuesday that the central bank could reduce its support for the economy more quickly, sending a shudder through Wall Street and pushing the S&P 500 negative for November.

what is the plot for Lyddie in chapter 8

Answers

Answer:

Bedlow takes Lyddie to the Concord Corporation Factory so that she can get a job. Lyddie is intimidated by all of the new, huge, and noisy machinery . Lyddie and Mrs. Bedlow speak to a man who offers Lyddie a one year contract with the corporation.

Explanation:

solve pls brainliest

Answers

Answer:

Answer: Hectic

Explanation:

Ok so, all the rest of them don’t make sense so the answer will be hectic.


how does kennedy claim the united states will interact with adversaries under his presidency

Answers

Answer:

He claims with a speaker, to all of the Americans through TV or reality.

Explanation:

What is a metaphor? a phrase made up of two words that are opposites a comparison made between two things a combination of words that sound the same a word that has more than one meaning

Answers

Answer:

a comparison made between two things

Answer:

oxymoron

An oxymoron is a figure of speech in which two apparently contradictory terms appear together. Examples include a deafening silence, harmonious discord, an open secret, and the living dead.

Explanation:

1. According to Romeo, what happens to people before they die?

Answers

Answer:

On line 89 he says people get a period of feeling "merry"

Explanation:

He calls this a "lightening"

Answer:

According to Romeo, what happens to people before they die? Romeo says many people have a period of feeling "merry" (line 89) or very happy just before they die. He calls this a "lightening" (line 90) that occurs "when men are at the point of death" (line 88). Romeo uses personification to describe death.

Explanation:

I really truly hope this helps :)

taiga forest are a type of forest found in cold parts of the world, including locations such as northern russia and canada. In these places, the length of time when it's warm enough for the trees to grow is approximately quite short

Answers

This period lasts only for about three months. The importance of this is that only a small ray of light from the sun… Hardly any light of this light faces or touches the ground. Is there a set of words that we can select from because there are many words that can fit

56565656565656565656If yo

Answers

56565656565656565656If yo

Her old eyes warmed at the sudden thought.This suggests that

Answers

She got happy at the thought of whatever she was thinking about

The hardest thing to do and why

Answers

Answer:

gdrtfrvch hi gjgynjyhghjhgghfdthfghhvgjuyhhh hi hi kki me go get a big hug is how it is HBC h

What is a nightmare? and what is your favourite nightmare

Answers

nightmare is a very disturbing dreamm with negative feelings.My favourite nightmare is when the monster under my bed pulled my legs and took me to a graveyard and burried me.

What of the following best summarizes the main point of including information about the earlier colony of Sir Walter Raleigh? To introduce one source of the settlers' fears To imply the new settlers would succeed To suggest causes of the earlier failures To create conflict for the new colonists.

Answers

A well-noted soldier, statesman and writer Sir Walter Raleigh was a prominent person in the era of Elizabeth that played a crucial role in colonization.

The statement that best supports the earlier colonization is:

Option A. To introduce one source of the settlers' fears.

The statement can be explained as:

This excerpt is taken from the passage Give Me Liberty by Thomas Wertenbaker which illustrates the struggle of Government in Virginia.

The new colonists are scared and feared about the earlier colonization of Sir Walter that created suspicion and doubts.

The emigres sent by Sir Raleigh vanished mysteriously causing anxiety and fear. The settlers feared the disappearance of other settlers.

Thus, it created fear in settlers.

To learn more about Sir Walter Raleigh follow the link:

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Write two to four sentences explaining how the author’s use of second- and third-person point of view helps readers understand the Children’s March.

Answers

Answer:

I don't know because you didn't put the sentences so therefor I don't know.

Explanation:

Write a thesis related to the following question:
Should people be accountable for life or death situations?

Answers

Answer:

People should be held accountable for life or death situations that they had substantial influence in or control over.

Explanation:

Your question is rather vague and not based upon any sort of book so I decided to give you a general statement --- heads start on your thesis. Life can be very surprising and sometimes events that happen are unstoppable. But clearly in every circumstance where an individual has affected something they should be held accountable for the outcome of their actions. Hope this helps.

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Mark's weight-loss counselor has observed that he has a self-defeating pattern of beliefs and cognitions about his inability to control overeating. Specifically, when he eats something that is not allowed on his diet, he instantly loses hope and ponders over her weak willpower. Mark's counselor is trying to encourage him to think otherwise and continue with his diet routine even if he waivers a few times. In this case, the therapist is utilizing a technique called HELPPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!! All of the following cause mechanical weathering EXCEPT ____. a. ice c. burrowing animals b. tree roots d. carbonic acid Assuming that the desired rate of return is 12%, determine the net present value for theproposal. Suppose that you have generated the estimates listed below from a pro forma analysis for a company that had requested a three year loan. The loan is a $1.5 million term loan with the equal annual payments of principals. The P&I payments are due at the end of each year with the annual interest rate = Prime rate + 2%. Yr.1 Yr. 2 Yr. 3 Capital expenditure 250,000 125,000 75,000 Cash dividends 140,000 140,000 140,000 Cash flow from operations before interest expense 750,000 780,000 800,000 Assuming the Prime rate = 8% each year. What will be the interest payment at year 2? a. 25,000.b. 50,000.c. 100,000.d. 150,000.e. 200,000. Bn hy phn bit Market Targeting v Target Marketing A board that measures 3/4 feet long is cut into 6 equal pieces . What is the length of each price A buyer of $7,000 in merchandise inventory failed to take advantage of the vendor's credit terms of 2/15, n/45, and instead paid the invoice in full at the end of 45 days. By not taking advantage of the cash discount, the buyer lost the discount of:_________a. 100b. 77c. 1155d. 770e. 231 The interiors are then ______________ thoroughly. In the Mid-Atlantic region there is little exposed rock , so the cars act as a ________________ surface to attract marine life. which of the following is a purpose for using comprehension stategies What is the distance from point Yto wx in the figure below?W 16 Z30X161234O A. 4O B. 162O C. 16O D. Cannot be determinedE. 16/3F. 8 You have $475 in your savings account that earns 3.25% simple interest each year. How much interest will you accumulate after 7 years? Two staff members just quit during the restaurant's busiest season . Denise would like to be considered for an assistant manager role . Which behavior will best help her earn her supervisor's respect and demonstrate that she would be a good fit for the promotion ? a ) Telling her supervisor that more staff needs to be hired to keep more people from quitting b ) Expressing disapproval over the employees who just quit c ) Trying to do all the work herself d ) Offering to take on some extra shifts How many acts occur in the majority of Shakespearean plays p(X)=x+50 then p(2)=a) 6b)7c)8d)9 If you were rolling dice in a casino and observed results comparable to those observed in Part 2, would you assume the dice were faulty or rigged? Explain your answer using data from your chi-square analysis. He remembered the story very well because he (read) the book several times. Reactive hyperemia is an example of .......... control of local blood flow .and is a ........ responseA) Myogenic-Short termB) Chemical-Long termC) Neural-Short termD) Metabolic-Short term The graph shows a probability distribution.What is P(X < 3)? Describe the main component in an electronic control unit (ECU) used in an automobile. Indicate the function of each ingredient. Which equation has the same solution as 10(x) - x + 5 = 41