Bài 3: Theo kế hoạch, một tổ công nhân phải sản xuất 360 sản phẩm. Đến khi làm việc, do phải điều 3 công nhân đi làm việc khác nên mỗi công nhân còn lại phải làm nhiều hơn dự định 4 sản phẩm. Hỏi lúc đầu tổ có bao nhiêu công nhân? Biết rằng năng suất lao động của mỗi công nhân là như nhau. Bài 4: Theo kế hoạch, một phân xưởng phải may 3000 cái áo. Khi thực hiện, mỗi ngày phân xưởng may nhiều hơn so với kế hoạch 6 cái áo nên đã may đưoc 2650 cái áo trước khi hết hạn 5 ngày. Tính số áo phân xưởng phải may mỗi ngày theo kế hoạch. Bài 5: Một xưởng mỹ nghệ dự định sản xuất thủ công một lô hàng gồm 300 cái giỏ tre. Trước khi tiến hành, xưởng được bổ sung thêm 5 công nhân, nên số giỏ tre phải làm của mỗi người giảm 3 cái so với dự định. Hỏi lúc dự định, xưởng có bao nhiêu công nhân? Biết năng suất của mỗi người là như nhau. Giúp mình 3 câu này nha. Cảm ơn mn!!

Giải giúp em bài này với ạ em đang cần gấp lắm giúp em nhé

2a+b+c+d/a=a+2b+c+d/b=a+b+2c+d/c=a+b+c+ 2d/d TínhQ=a+b/c+d + b+c/d+a + c+d/a+d + d+a/b+c

Một vật chuyển động theo quy luật s=-1/3t^3 + 6t^2 là khoảng thời gian tính từ khi vật bắt đầu chuyển động và s là quãng đường vật di chuyển được trong khoảng thời gian đó. Hỏi trong 9s, kể từ khi bắt đầu chuyển động, vận tốc lớn nhất của vật đạt được là?

X. Read the text carefully, and then do the tasks that follow 1. Britain has always been a mixed society. In the distant past, Celts, Romans, Saxons, Vikings, and Normans all settled in Britain. During the past 150 years, people from Ireland, the former British colonies and the European Union have also come to Britain. 2. In the 1840s, there was a terrible famine in Ireland. A million people died and a million more left Ireland, and never returned. Most went to the USA, but many came to Britain. 3. In the 1950s and 1960s, the British government invited people from Britain’s former colonies to live and work in Britain. The majority was from the West Indies, Pakistan, India and Hong Kong. 4. People from countries in the European Union are free to travel, live and work in any other EU country. Recently, a lot of people have arrived from Central and Eastern Europe. 5. There are thousands of Indian and Chinese restaurants in the UK. Immigrants from the West Indies started the Notting Hill Carnival in 1965. It is now the biggest street festival in Europe. There are a lot of Irish pubs in Britain and Irish folk music is popular. Task 1: Match the headings (A-E) with the paragraphs (1-5) of the text ……. A. The European Union ……. B. Ireland ……. C. Introduction ……. D. The former colonies ……. E. How have immigrants influenced British life? Task 2: Match the highlighted words in the text with their meanings ……… 6. settled A. countries which another country controls ……… 7. colonies B. most ……… 8. famine C. came and lived ……… 9. majority D. not long ago ……… 10. recently E. a time when there is very little food ……… 11. immigrants F. people who come and live in another country Task 3: Are the sentences True or False? 12. Immigration into Britain started in the 19th century. 13. People left Ireland in the 1840s because there wasn’t enough food to eat. 14. Many Irish people left Ireland and returned later. 15. The West Indies, India, and Pakistan are former British colonies. 16. In the 1950s and 1960s, the British government tried to stop immigration. 17. In the last few years, a lot of people have arrived from southern Europe. XI. Use the words given and other words, complete the second sentence so that it has a similar meaning to the first sentence. Do not change the word given (Use 2-5 words in total) 1. We’ve never been to Alaska before. (ever) It’s the first time we ………………………………….. Alaska. 2. Tom plans to open to another restaurant in Manchester next month. (is) Tom ………………………………….. in Manchester next month. 3. The last time Phong visited Tasmania was five years ago. (visited) Phong ………………………………….. five years. 4. The early train is scheduled to arrive in London at 10 o’clock. (arrives) The early train ………………………………….. at 10 o’clock. 5. It’s the most beautiful waterfall I’ve ever seen. (such) I ………………………………….. beautiful waterfall. làm hộ mình.

VI. Choose the best answer to complete each of the following sentences 1. The Statue of Liberty is a major monument in New York which …………… freedom. A. attracts B. symbolizes C. decides D. understands 2. Like the kangaroo and koala, the platypus is a …………… animal in Australia. A. scenic B. tailless C. foreign D. unique 3. David uses English as his mother …………… because he comes from the UK. A. tongue B. mouth C. nose D. cheek 4. The Sydney Opera House is an …………… of Australia’s creative and technical achievement. A. orchestra B. emblem C. icon D. armorial 5. The government of New Zealand has done a lot to …………… the culture of the Maori. A. preserve B. surround C. puzzle D. pronounce 6. Coming to Scotland, visitors can drive through vast green …………… . A. lochs B. stations C. castles D. pastures 7. - How is your holiday in New Zealand? - …………… . A. Really B. Awesome C. Absolutely right D. Sure 8. The flight number 781 to Melbourne …………… at 9 o’clock tomorrow morning. A. arrives B. is arriving C. has arrived D. will arrive 9. Some documents say that people …………… the Glastonbury Festival since the beginning of the 19th century. A. celebrated B. were celebrating C. have celebrated D. celebrate 10. We …………… on the Great Ocean Road, an Australia National Heritage at the moment. A. will drive B. drive C. have driven D. are driving VII. Choose the word or phrase the is CLOSEST in meaning to the underlined part in each of the following sentences 1. This city is legendary for many significant events which many people around the world enjoy. A. well-known B. exciting of C. haunting of D. historic about 2. Driving through vast green pastures, or boating on scenic lakes – or lochs – are other attractions that Scotland offers. A. famous people B. beautiful places C. friendly tourists D. wide lakes and rivers 3. Australia is the world’s only country which covers an entire continent. A. large B. historic C. spectacular D. complete VIII. Choose the word or phrase the is OPPOSITE in meaning to the underlined part in each of the following sentences 1. When you get inside the spacious café, you will find yourself among various wooden puzzles and games. A. large B. haunted C. symbolic D. small 2. The truth about these castles, which are haunted by ghosts, is still puzzling, so many people still make questions about them. A. interested B. clear C. confusing D. questioning IX. Fill in each blank in the following passage with ONE suitable word English is the (1) ………………… language of the Philippines. English-medium education (2)………………… in the Philippines in 1901 after the arrival of some 540 US teachers. English was also chosen for newspaper and magazines, the media, and literary writing. The latest results from a recent survey suggest that about 65 percent of the (3) ………………… of the Philippines has the (4) ………………… to understand spoken and (5) ………………… English, with 48 percent stating that they can write standard English. The economy is based on English, and successful workers and managers are fluent (6) ………………… English. (7) …………………, many schools know that their (8) ………………… must be fluent in English to be successful. Làm hết hộ mình

cách đổi 12 kg khí C4H10 ra lít?

có bao nhiêu có có 4 chữ số abcd mà a,b,c,d đôi một khác nhau

I. Choose the word which has the underlined part pronounced differently from the rest 1. A. iconic B. monument C. freedom D. opera 2. A. liberty B. visitor C. symbolize D. tradition 3. A. religious B. forest C. event D. schedule 4. A. nation B. nature C. cartoon D. ancient 5. A. canyon B. ancient C. capital D. Scotland II. Choose the word which is stressed differently from the rest 1. A. engineer B. refugee C. trainee D. guarantee 2. A. Japanese B. Vietnamese C. Chinese D. Portuguese 3. A. kangaroo B. committee C. official D. iconic 4. A. interviewee B. absolutely C. interviewer D. wonderful 5. A. symbolize B. amazing C. monument D icon III. Complete the sentences with the words in the box accent igloo brigade loch cattle monument fence native football symbol 1. The silver fern is national …………………… of New Zealand. 2. Mount Rushmore is a national …………………… carved into a mountain in South Dakota, USA. 3. Trung speaks English like a …………………… though he comes from Vietnam. 4. I sometimes thought John’s …………………… sounded English sometimes American. 5. In Scotland, the word ‘……………………’ is used to describe any large, enclosed expanse of water. 6. It took six years to build the rabbit-proof …………………… in Australia. 7. England is the original home of …………………… because the sport was invented there. 8. Edinburgh, Scotland was the first city in the world to have its own fire …………………… in 1824. 9. Anna Creek Station in South Australia is the world’s largest …………………station with an area of 24,000 km2. 10. An …………………… is a type of shelter built of snow by the Inuit, the Aboriginal peoples in Canada. IV. Put the words in brackets into the right forms to complete the sentence 1. Both French and English are ………………………. languages in Canada. 2. NSW is the ………………………. of New South Wales, the most populous state in Australia. 3. The Gold Coast is famous for its most ………………………. theme parks in Australia such as Dreamworld and WhiteWater World. 4. Do you know that the telephone, the television and penicillin are Scottish …………………? 5. Visitors can spend ………………………. days exploring amazing natural beauty of New Zealand. 6. There are different kinds of ………………………. provided throughout Disneyland. 7. Scotland is a ……………………. land and this is noted for its rich and interesting history. 8. We’ll take the early ………………………. from Sydney to Wellington. 9. Niagara Falls, on the border of the USA and Canada, is one of the most ……………………. scenery in the world. 10. There are many tourist ………………………. in London such as British Museum, London Eye and Tower of London. OFFICE ABBREVIATE ICON INVENT END ENTERTAIN LEGEND FLY SPECTACLE ATTRACT V. Complete the sentences with the correct form of the verbs in present tenses (present simple, present continuous or preset perfect) 1. A koala (spend) …………………… about 18-20 hours sleeping in tree forks. 2. It’s only my first week in Wales, and I (see) …………………… so many interesting things already. 3. The number of kiwis in this area (decrease) …………………… quickly. 4. The Aborigines (live) …………………… in Australia for more than 40,000 years. 5. Most European citizens (not have) …………………… to apply for a visa to visit Canada. 6. At the moment, thousands of people (gather) …………………… in Trafalgar Square, London to celebrate St Patrick’s Day. 7. The kangaroo (become) …………………… a symbol of Australia since 1773. 8. The bald eagle, an American symbol, (not live) …………………… in any other places besides North America. 9. I think Mr. Viet (not be) …………………… to Northern Ireland yet. 10. The Taylors (not stay) …………………… in New York now. They moved to San Francisco two months ago. Làm hộ mình hết mình cho 50 điểm

trong các danh từ sau đây danh từ nào chỉ một vật dungj chống bụi: khẩu trang khẩu phục áo mưa khẩu khí