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20 tháng 4 2022

\(x\times\dfrac{20}{11}=\dfrac{1}{1}-\dfrac{1}{3}+\dfrac{1}{3}-\dfrac{1}{5}+\dfrac{1}{5}-\dfrac{1}{7}+\dfrac{1}{7}-\dfrac{1}{9}+\dfrac{1}{9}-\dfrac{1}{11}\\ x\times\dfrac{20}{11}=\dfrac{10}{11}\\ \Rightarrow x=\dfrac{1}{2}\)

20 tháng 4 2022

Ta có :

=> X x 20/11 = ( 1 - 1/3 ) + ( 1/3 - 1/5 ) + ( 1/5 - 1/7 ) + ( 1/7 - 1/9 ) + ( 1/9 + 1/ 11 )

=> X x 2/11 = 1 - 1/11 = X x 1/11 = 11/11 - 1/11

=> X x 20/11 = 10/11

=> X = 10/11 : 20/11

=> X = 1/2

26 tháng 5 2018

Hãy sắp xếp những câu sau thành hai bài hội thoại hợp lí:

P1

(1)Could you do me a favor, please?

(2)Sure. What can i do for you?

(3)Yes. Could you show me to the nearest bus-stop?

(4)Certainly. Go ahead. Take the second turning on the left. It's on the way.

(5)Thank you. i'm sure i'll find it.

P2

(1)Do you need my help?

(2)Can you help me remove this motorbike? It's on the way.

(3)No problem. i'll help you.

(4)Thank you very much. That's very kind of you.


26 tháng 5 2018

Thank you so much!!!

1...................How can I help you ? a. Do you need any help ? b, How may I help you c. Let me help you d. could you help me 2. Let me help you ?-..................... a, no problem b. no. thank you c. thank you, I don't need d. sure 3. I need a favor.-................... a. no problem b. what do you need c. Yes. I know d. No thank you 4. .............?- Certainly a. do you help me ? b. you don't mind helping me c. can you help me d. that's very kind of you 5....
Đọc tiếp

1...................How can I help you ?

a. Do you need any help ?

b, How may I help you

c. Let me help you

d. could you help me

2. Let me help you ?-.....................

a, no problem

b. no. thank you

c. thank you, I don't need

d. sure

3. I need a favor.-...................

a. no problem

b. what do you need

c. Yes. I know

d. No thank you

4. .............?- Certainly

a. do you help me ?

b. you don't mind helping me

c. can you help me

d. that's very kind of you

5. .................?- Yes. That's very kind of you

a. may I help you

b. Did you need any help

6. The red bicycle is not as expensive ...............the blue one

a. so

b. like

c. more

d. as

7. They're offering a 10%...........on all sofas this month

a. reward

b. discount

c. reduce

d. cut

8. Mr Brown is the same age............my father

a, as

b. like

c. from

d. with

9. Could you do me a favor, please ?

a, I can't help you

b, Sure. What can I do for you

c. Yes. Thank you

d. Luckily, I am really busy

10. Excuse me! I'm doing my homework,................turn down your radio a bit ?

a, would you like

b. why don't you

c. could you

d. would you mind

11. would you like to see a film?

a, yes I like

b. yes I do

c. Yes I will

d. Great!Let's go

2
6 tháng 12 2018

1...................How can I help you ?

a. Do you need any help ?

b, How may I help you

c. Let me help you

d. could you help me

2. Let me help you ?-.....................

a, no problem

b. no. thank you

c. thank you, I don't need

d. sure

3. I need a favor.-...................

a. no problem

b. what do you need

c. Yes. I know

d. No thank you

4. .............?- Certainly

a. do you help me ?

b. you don't mind helping me

c. can you help me

d. that's very kind of you

5. .................?- Yes. That's very kind of you

a. may I help you

b. Did you need any help

6. The red bicycle is not as expensive ...............the blue one

a. so

b. like

c. more

d. as

7. They're offering a 10%...........on all sofas this month

a. reward

b. discount

c. reduce

d. cut

8. Mr Brown is the same age............my father

a, as

b. like

c. from

d. with

9. Could you do me a favor, please ?

a, I can't help you

b, Sure. What can I do for you

c. Yes. Thank you

d. Luckily, I am really busy

10. Excuse me! I'm doing my homework,................turn down your radio a bit ?

a, would you like

b. why don't you

c. could you

d. would you mind

11. would you like to see a film?

a, yes I like

b. yes I do

c. Yes I will

d. Great!Let's go

6 tháng 12 2018

1.d

2.c

3.b

4.c

5.a

6.d

7.b

8.a

9.b

10.c

11.d

I.            Use “not as / so … as” to rewrite these sentences :1.      Jimmy is clever. We think he is clever.                                                                            2.      This boy doesn’t help me much. He can help me...
Đọc tiếp

I.            Use “not as / so … as” to rewrite these sentences :

1.      Jimmy is clever. We think he is clever.

                                                                            

2.      This boy doesn’t help me much. He can help me much.

                                                                                                                      

3.      We don’t export much wood this year. We exported more wood last year.

                                                                                                                      

4.      Miss Duyen’s house is the oldest house on this street.

                                                                                                                      

5.      The exercises are not difficult. I thought it was very difficult.

                                                                                                                      

6.      The students write less papers than they did last year.

                                                                                                                      

7.      The paper mill puts out more products than it did two years ago.

                                                                                                                      

8.      Miss Huong Tram is the best student in her English class.

                                                                                                                      

9.      This boy doesn’t spend much money. He spent much money last month.

                                                                                                                      

10.   She doesn’t get up late. She used to get up very late during her holidays.

1
1 tháng 12 2021

câu 8 sai đề gòi nè :'>

No one in her English class is as good as Miss Huong Tram

dù sao cx chăm chỉ quá, chắc vượt top mình sớm hoi 😢

1 tháng 12 2021

1. Jim is as clever as we think.

2. This boy doesn't help me as much as he can.

3. We export wood not as much as we did last year.

4. No houses on this street is as old as Miss Duyen’s house.

5. The exercises are not as difficult as I thought.

6. The students didn't write as much papers as they did last year.

7. The paper mill doesn't put out as few products as it did two years ago.

8. No one in her English class is better than Miss Huong Tram.

9. This boy doesn’t spend as much money as he did last month.

10. She doesn’t get up as late as she used to during her holidays.

18 tháng 10 2018

I was born and grown up on the poor land in Duc Tho district, Ha Tinh province. That’s where deeply attaches to me 24 years of life. If anyone who asks me that “What’s the thing your most proud of?” .I will answer that’s my hometown. Duc Tho is the land poor where the people live by rice cultivation, breeding, and fishing. Although the life is very difficult, but the people is very friendly, and studious. In Duc Tho, there is a Tung Anh village where called “Doctor village”. Duc Tho is also the home of Tran Phu Secretary General, and marked many memories of the great leader Ho Chi Minh.

If you come to Duc Tho, you will feel many interesting things, visiting Tran Phu tombstone, La Giang dyke, rowing on La driver, and enjoying the traditional songs. In the evening, they can enjoy a special food which is “mussel rice” – just only eat one time, you will never forget.

Beautiful and unobtrusive! Duc Tho always tries to grow, and to improve the life of people, but keeping the traditional culture.

18 tháng 10 2018

fuck you

20 tháng 11 2016

Bình đúng. tk cho mình nhé

28 tháng 4 2018

Most of the air pollution results from the burning of fossil fuels, motor vehicles, factories, aircraft and rockets. This can cause acid rain which damages water, soil, and vegetation. Air pollution also contributes to the greenhouse effect which can lead to a series of environmental problems such as global warming, polar ice melting, rise of sea levels and loss of land.

Water pollution is a result of dumping pollutants such as detergents, pesticides, oil, and other chemicals in rivers, which makes the water unclean or contaminated. Rubbish blockages in rivers can also cause pollution.



28 tháng 4 2018
Soil pollution is a consequence of human activities that alter ecological factors that cross the ecological boundaries of the communities living in the soil. The land environment is home to human beings and most of the shallow creatures, the foundations for civil, industrial and cultural constructions. Land is a precious resource, people use land resources for agricultural production to ensure food supply for people. But with the pace of population growth and the pace of industrial development and urbanization, the area of ​​arable land is shrinking and land quality deteriorates, the average land area head drops. Parularly in Vietnam, the actual depletion of land resources is very worrying and serious.  What do we need to do to protect the environment? That is the question that every one of us needs to answer. In my opinion, protecting the environment is the responsibility of the whole community. Everyone must have a sense of protection. The green, clean, beautiful environment will make our lives better. From the house to the alley, from the alley to the school etc. The place is also clean and airy, many trees, air will be fresh, health will be guaranteed. That everyone wants. At present, I see my class, our school where the concentration of people, not very clean, garbage also lunged, trees are still less. On the street, there are public trash but few people put garbage in the bin, you do not throw it, making the street scene is not beautiful. To protect the environment, I feel we must always have a sense of environmental protection in parular: Do not throw garbage indiscriminately, do not discharge dirty water into ponds, do house cleaning, alleys, schools, not breaking flowers ... and propaganda for people always have common sense and responsibility for environmental protection.
29 tháng 4 2018

giúp mk water or air thôi nhá bn, 

9 tháng 8 2017

a) | x+5|+3=7

|x+5|=4

=> x+5=4

Hoặc x+5=-4

=>x thuộc { -1 ; -9}

Vậy x thuộc { -1 ; -9}

9 tháng 8 2017

b) 25 - | x| =10

=> |x|=15

=> x thuộc { 15 ; -15}

Vậy c thuộc { 15 ; -15}