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31 tháng 10 2025

help me

31 tháng 10 2025

Task: A train travels 120 kilometers in 2 hours. How long will it take to travel 300 kilometers at the same speed?

Chúng ta sẽ giải bài toán này theo hai bước:

Bước 1: Tính vận tốc của tàu hỏa

Vận tốc (\(v\)) được tính bằng công thức: Vận tốc = Quãng đường / Thời gian.
Quãng đường ban đầu (\(d_{1}\)) là \(120 \&\text{nbsp};\text{km}\).
Thời gian ban đầu (\(t_{1}\)) là \(2 \&\text{nbsp};\text{gi}ờ\).

\(v = \frac{d_{1}}{t_{1}} = \frac{120 \&\text{nbsp};\text{km}}{2 \&\text{nbsp};\text{gi}ờ} = 60 \&\text{nbsp};\text{km}/\text{h}\)

Vận tốc của tàu hỏa là \(60\) kilômét trên giờ.

Bước 2: Tính thời gian để đi được 300 kilômét

Thời gian (\(t\)) được tính bằng công thức: Thời gian = Quãng đường / Vận tốc.
Quãng đường mới (\(d_{2}\)) là \(300 \&\text{nbsp};\text{km}\).
Vận tốc (\(v\)) là \(60 \&\text{nbsp};\text{km}/\text{h}\).

\(t_{2} = \frac{d_{2}}{v} = \frac{300 \&\text{nbsp};\text{km}}{60 \&\text{nbsp};\text{km}/\text{h}} = 5 \&\text{nbsp};\text{gi}ờ\)

Trả lời:
Sẽ mất 5 giờ để tàu hỏa đi được quãng đường \(300\) kilômét với cùng vận tốc đó.

31 tháng 10 2025

Okey thank you for the invite and support for your family and friends

1 tháng 11 2025

5 hours ✔

1 tháng 11 2025

ok !nguyễn bảo ngà why u not do this?

cách 1:

bài giải

1 giờ đi được số ki-lô-mét là:

120 : 2 =60(km)

300 ki-lô-mét đi được trong số giờ là:

300 : 60= 5(giờ)

đáp số : 5 giờ


25 tháng 12 2021

Bài 5. Cho dạng đúng của động từ trong ngoặc.

 1. Be careful! The car (go) is going so fast.

2. Listen! Someone (cry) is crying in the next room.

3. Your brother (sit) is sitting next to the beautiful girl over there at present?

 4. Now they (try) are trying to pass the examination.

5. It’s 12 o’clock, and my parents (cook) are cooking lunch in the kitchen.

 6. Keep silent! You (talk) are talking so loudly.

7. I (not stay) am not staying at home at the moment.

8. Now she (lie) is lying to her mother about her bad marks.

9. At present they (travel) are traveling to New York.

10. He (not work) isn't working in his office now.

25 tháng 12 2021

1. is going 2. are crying 3. is sitting 4. are trying 5. are cooking 6.are talking 7. am not staying 8. is lieing 9. are travelling 10. isn't working

I. Choose the option that best completes each of the following sentences1. Those children always help their parents _____ the housework.A. to B. with C. do D. B & C are correct 1. ……………2. A customer is a person who _____.A. buys B. sells C. acts D. plays 2. ……………3. My sister works _____ than me.A. less hour B. few hours C. more hours D. little hours 3. ……………4. _____ does Nga go to the movie? Once or twice a week.A. How long B. How often C. How much D. How 4....
Đọc tiếp

I. Choose the option that best completes each of the following sentences
1. Those children always help their parents _____ the housework.
A. to B. with C. do D. B & C are correct 1. ……………
2. A customer is a person who _____.
A. buys B. sells C. acts D. plays 2. ……………
3. My sister works _____ than me.
A. less hour B. few hours C. more hours D. little hours 3. ……………
4. _____ does Nga go to the movie? Once or twice a week.
A. How long B. How often C. How much D. How 4. ……………
5. Lan: Let’s go to the movies this evening
Ba: Yes, _____.
A. That’s a good idea B. we are C. Thanks D. I am 5. ……………
6. He hates fish. He _____ eats fish.
A. usually B. sometimes C. never D. often 6. ……………
7. How _____ can we drink?
A. far B. much C. many D. long 7. ……………
8. There is an intersection ahead. We _____.
A. must not slow down B. must go fast
C. can not go straight D. must slow sown 8 . ……………
9. There is a _____ behind my classroom.
A. big flower garden B. flower big garden C. garden big flower D. big garden flower 9. ……………
10. There _____ of stars in the sky.
A. is million B. are million C. has millions D. are millions 10. ………….
11. The road signs are very _____. They tell us what we must do.
A. useful B. dangerous C. easy D. difficult 11. ………….
12. My girlfriend is a _____.
A. gymnastics B. gymnasium C. Gymnasts D. gymnast 12. ………….
13. Tuan and I _____ badminton in the yard.
A. are playing B. playing C. is playing D. am playing 13. ………….
14. _____ do you get there? – We walk, of course.
A. Why B. What C. How by D. How 14. ………….
15. I need a large _____ of toothpaste.
A. bar B. can C. tube D. box 15. ………….

2
29 tháng 5 2021

I.

1. B

2. A

3. C

4. B

5. A

6. C

7. B

8. D

9. A

10. D

11. A

12. D

13. A

14. C

15. C

29 tháng 5 2021

1D ; 2A ; 3C ; 4B ; 5B ; 6C ; 7B ; 8D ; 9A ; 10D ; 11A ; 12C ; 13 A ; 14D ; 15C

Question 1. What’s your favourite food?
My favourite food is pizza because it tastes very good.

Question 2. What do you do in your free time?
In my free time, I read books, listen to music, and play football.

Question 3. How often do you play computer games?
I play computer games about twice a week.

Question 4. Where do you have ICT lessons?
I have ICT lessons in the computer room at school.

Question 5. What are you good at?
I am good at drawing and doing maths.

I'm the best ''Chad '' in the world !🤡🤡🤡

  • What’s your favourite food?
    I don’t eat, but if I had to pick something, I think I’d go with pizza. It’s so versatile!
  • What do you do in your free time?
    I don’t have free time in the usual sense, but I enjoy helping people with questions, learning new things, and having interesting conversations!
  • How often do you play computer games?
    I don’t play games, but I know a lot about them! If I could play, I’d probably get into strategy games or puzzle games.
  • Where do you have ICT lessons?
    I don't attend school, but I imagine ICT lessons would be great at a computer lab or a classroom with lots of technology.
  • What are you good at?
    I’m good at answering questions, helping with ideas, and providing information on a variety of topics. I also enjoy problem-solving!
    tk
Giúp cho mik nha :  Read and answer the questions (Đọc và trả lời câu hỏi) (2điểm)Paragraph 1. MY HOMETOWNHello, my name is Lisa. I live in London. I often go back to my hometown to visit my grandparents. They live in the north of England. First, I go to the London King’ Cross railway station by Underground. It takes me about half an hour. After that, I take a train to my hometown. It takes me four hours to get there. I prefer travelling by train because I can enjoy the...
Đọc tiếp

Giúp cho mik nha :

 

 Read and answer the questions (Đọc và trả lời câu hỏi) (2điểm)

Paragraph 1. MY HOMETOWN

Hello, my name is Lisa. I live in London. I often go back to my hometown to visit my grandparents. They live in the north of England. First, I go to the London King’ Cross railway station by Underground. It takes me about half an hour. After that, I take a train to my hometown. It takes me four hours to get there. I prefer travelling by train because I can enjoy the scenery on the way. It takes about ten minutes to walk from the local railway station to my grandparents’ house. I always have a wonderful time in my hometown.

1. Where is Lisa’s hometown? -> It’s in the north of England.

2. How doesshe get to London King’ Crossrailway station?

.................................................................................................................

3. How does she get from London King’ Crossrailway station to her hometown?

.................................................................................................................

4. How long does it take her to travel there by train?

.................................................................................................................

2
30 tháng 6 2020

2. By underground 

3. By train 

4. 4 hours 

 Read and answer the questions (Đọc và trả lời câu hỏi) (2điểm)

Paragraph 1. MY HOMETOWN

1. Where is Lisa’s hometown?

-> It’s in the north of England.

2. How does she get to London King’ Crossrailway station?

=> she gets to London King’ Cross railway station by Underground

3. How does she get from London King’ Crossrailway station to her hometown?

=> she gets from London King’ Cross railway station to her hometown by train

4. How long does it take her to travel there by train?

=> It takes her four hours to get there

I. Complete the second sentence using the word given, so that it has a similar meaning to the first one1. Having a vacation abroad is very interesting.It is …………………………………………………………………………………………………….........................................2. Miss White’s face is oval. It is small.Miss...
Đọc tiếp

I. Complete the second sentence using the word given, so that it has a similar meaning to the first one
1. Having a vacation abroad is very interesting.
It is …………………………………………………………………………………………………….........................................
2. Miss White’s face is oval. It is small.

Miss White……………………………………………………………………………………………………................................
3. Why don’t we go to Dam Sen Park?

What about……………………………………………………………………………………………………...............................?
4. No house on the street is older than this house.

This house…………………………………………………………………………………………………….................................
5. How much is this dictionary?

What…………………………………………………………………………………………………….........................................?

5
29 tháng 5 2021

1. It is interesting to have a vacation abroad.

2. Miss White has a small oval face

3. What about going to Dam Sen Park ?

4. This house is the oldest on the street

5. What is the price of this dictionary ?

29 tháng 5 2021

xl anh thư, hnay mình chọn bn hơn 3 lần r nên ko chọn đúng dc nữa, mai mình bù nhé

25 tháng 12 2021

Bài 1: Cho dạng đúng của động từ trong ngoặc

1. Sit down! A strange dog (run) is running to you.

 2. My brothers (not/ drink) aren't drinking coffee at the moment. 

3. Look! Those people (climb) are climbing the mountain so fast. 

4. That girl (cry) is crying loudly at the party now. 

5. What are (you/ do) doing in the kitchen? 

6. Tonight we (not/ go) aren't going to our teacher’s wedding party. 

7. Where are you? We (wait) are waiting for you! 

8. What are the boys (do) doing now? 

9. My brother (not listen) isn't listening to the radio at present. 

10. My parents (drive) are driving to work now.

25 tháng 12 2021

1 .Sit down ! A strange dog running

2 My brother doesn't drink coffe at moment

3 . Look ! Those people climbing the mountains so fast

4 . That girl crying louldly in the party now

5 . What do you do in the kitchen ?

6 . Tonight we aren't goes to our teacher's wedding party .

7 . Where are you ? We waiting for you

8 . What are the boys does now ?

9 . My brother doesn't listen to the radio at present

10 . My parents driving to work now

           a village                      a farm        a zoo                    a park mountains a city 1. People like climbing these in the holidays.        ………………….. 2. People raise animals like cows and sheep here.    ………………….. 3. This is an area of public land in a town or a city where       people go to walk, play and relax. ………………….. 4. A place where people come to see many kinds of animals      or...
Đọc tiếp

           a village                      a farm        a zoo                    a park mountains a city 1. People like climbing these in the holidays.        ………………….. 2. People raise animals like cows and sheep here.    ………………….. 3. This is an area of public land in a town or a city where       people go to walk, play and relax. ………………….. 4. A place where people come to see many kinds of animals      or study them.  5. This is a group of houses and other buildings that      is smaller than a town, usually in the countryside. …………………..   ………………….. Question 2. Read the passage and tick True (T) or False (F). (6,25 p)  Ben's day in the mountains My name's Ben. I live in a town with my parents and a dog, Sam. Last holiday, we went to see my grandparents. I love going to see them because they live in the mountains. One day, Dad, Mum and I wanted to climb a mountain.  Grandpa gave us a map and told us to wear strong shoes. My Dad said "Let's go for a picnic". We started climbing. It was sunny. Sam was very happy. He ran in front of  us. It was very beautiful at the top of the mountain. Mum sat on a rock and looked at the map. Dad took some pictures of us. We had our picnic, then I played in a waterfall and Sam tried to catch rabbits.            When we started walking down the mountain, Dad said "Look at those black clouds!" It started raining. "I can't see" I said. I was afraid. "It's ok!" said Dad. "We've got Sam with us". Dad was right. Sam walked in front of us and found my grandparents' house again.    T        F 1. Last holiday, Ben's family went to town to visit his grandparents.   2. They wanted to climb a mountain.   3. The dog, Sam did not go with them.   4. It rained when they walked down the mountain.   5. They didn't  find Sam when they came back to his grandparents' house.    Question 3. Put the following sentences in the correct position to make a complete           dialogue. (6,25 p)  Quan: What do you do in your free time, Linda? Linda:(1) ……………………………………………………………………… Quan:(2) ……………………………………………………………………… Linda:(3) ……………………………………………………………………… Quan:(4) ………………………………………………………………………  Linda: (5)……………………………………………………………………… Quan: Doraemon.  a. I see. What are you reading now? b. What comic book do you like best? c. No, I don't. I like reading comic books. d. I read a lot. I like fairy tales. e. Snow White and the seven Dwarfts. What about you? Do you like fairy tales? Question 4. Read and complete using the words on the box. There is one example. (6,25 p)      I went to the (0) zoo with my classmates last Sunday.  First, we saw the (1) ………..They were eating bananas. They were fun to watch because they (2)  ……up and down quickly. Then we went to see some (3)……….., the kings of the forest. I liked them very much because they were (4) ………..and fast. We also saw some (5) ……….. they were eating bamboos. They were very cute and did everything slowly. In the end, we saw peacocks. My classmates liked them because they moved beautifully. We had a really good time at the zoo.   monkeys zoo jumped tigers strong clever pandas crocodiles Part B. Writing (20 minutes) Question 1. Complete the passage by writing the words as the example. (6,25 p)   First, I (0)          get up  at six thirty  and then I make my bed, tidy the room and go to the (1)                       to brush my teeth and wash my face. At a quarter past seven I have (2)                                    with my family and then I get ready for school. At a quarter to eight I get on the school(3)                                                                  and go to school where I study hard. I have five or six classes of fourty minutes. When I finish school at one o'clock I go(4)                    and relax. I have lunch at around 2 o'clock. After lunch, I watch TV and then I play computer game for about one hour. At five o'clock I start to do my homework, I listen to music or chat with my friends. At eight o'clock I have dinner with my family. At nine o'clock I usually have a shower. At half past ten I go to(5)         This is my daily routine. Question 2. Complete the sentences by rearrange the words (as the axample). (6,25 p)  Example: 0. often/ up/ at/ o'clock/ I/ six / . I often get up at six o'clock.  1. often/ do/ in/ What/ morning/ you/ the/ do/?                                                                                                                                  2. visit / we / Last / went / , /Hanoi/ bus / Sunday / to / by /.              . 3. Friday / I / four/ On/ , / mornings/ have / lessons/.              . 4. did / Mai's / you / party/ at / do / What / birthday/?              . 5. will/ my / to / Ha Long Bay / go / family / Saturday/ I/ next/ with/ .               Question 3. Write about  your friend. Write about 35-45 words. Using suggested questions bellow. (12,5 p)  1. What's his/ her name?  ............................................................................................................................................ 2. How old is he/ she? ........................................................................................................................................... 3. What class is he/ she in? ............................................................................................................................................ 4. Where does he/she live? ............................................................................................................................................ 5. Who does he/ she live with? ............................................................................................................................................ 6. What is his/her home like? ............................................................................................................................................ 7. What is his/her favourite subject? ............................................................................................................................................ 8. Why does he/ she like it? ...................................................................................

2
28 tháng 2 2025

David and Lucy live in London, in England. They have a big house near a park. There are three bedrooms and two bathrooms in their house. David and Lucy have two children: a boy and a girl. David works in a bank and his wife is a doctor. They usually leave home at eight o'clock. Lucy drives to school with her two children. Then she drives to works at the hospital. In the evening, Lucy always cooks dinner. After dinner, they sometimes watch TV.


28 tháng 2 2025

David and Lucy live in London, in England. They have a big house near a park. There are three bedrooms and two bathrooms in their house. David and Lucy have two children: a boy and a girl. David works in a bank and his wife is a doctor. They usually leave home at eight o'clock. Lucy drives to school with her two children. Then she drives to works at the hospital. In the evening, Lucy always cooks dinner. After dinner, they sometimes watch TV.

Mik đang cần gấp, thank you các bạn nha! À quên, các bạn nhớ giải thích vì sao các bạn cho là đúng nhé!

23 tháng 2 2020

1 with 

2 how

3 supermarket

4.five

5.sounds

28 tháng 9 2021

1) It took us 5 hours to get to London

2) I spend two hours each day to do my homework 

3) I took me three month to accomplish this task

4) There are a lot of tables in the Cafe

26 tháng 12 2021

1. is buying

2. isn't studying

3. Is she running

4. is eating

5. are you waiting

6. aren't trying

7. are having

8. are travelling

9. is drinking

10. is speaking

30 tháng 3 2025

1 was buying

2 wasn't studying

3 Her, was runing

4 was eatting

5 You, was waiting

6 was trying

7 were having