1. Với x=a/m, y=b/m (a,b € z, m>0).Tính x+y,x-y 2.Tính 0,6 + (-2/3)

Ai giải hộ bài này cho e đc ko ạ e đg cần gấp lắm luôn rồi

Gíup em với ,ai nhanh nhất em vote 5* và tlhn ạ

Cặp đoạn chắn song song là gì ?

chuyển qua thì quá khứ đơn stop → by → send → talk →

2B= 1+1/2+1/2^2+1/2^3+.....+1/2^2016 Giups em với ạ trình bày rõ ràng giúp với ạ.

a, S¹ = 1 + (-2) + 3 + (-4) + ... + 2001 + (-2002) b, S² = 1 + (-3) + 5 + (-7) + ... + (-1999) + 2001 c, S³ =1 + (-2) + (-3) + 4 + 5 + (-6) + (-7) + 8 + ... + 1997 + (-1008) + (-1999) + 2000. GẤP LẮM LUÔN !!! 😭😭

I. Complete the sentences with the phrases in the box. trains discourage transport expensive example problem cities pollution 1. We needed to get to Ha Noi, but we had no 2. You should know the regulations in order to become a good . 3. A is a place on a road at which vehicles must stop to allow people to walk across the road. 4. A is an official document that shows you are able to drive. 5. Roadworks have caused throughout the city centre. 6. I have two available to go to Lao Cai. Would you like to go with me to Sa Pa? 7. The government has introduced a new ________________ campaign in an attempt to reduce the number of road accidents. We looked on our map to find the way to the . 8. Slow down because you’re breaking the 9. A is a hard hat which covers and protects the whole head, worn especially by motorcyclists. II. Fill in the blank with a word/ phrase in the box. Traffic congestion in many (1) around the world is severe. One possible solution to this (2) is to impose heavy taxes on car drivers and use this money to make public transport better. One of the first benefits of such a measure is that the heavy taxes would (3) car owners from using their cars because it would become very (4) to drive. This would mean that they would begin to make use of public (5) instead, thus reducing traffic problems and (6) as well. Another benefit would be that much more use would be made of public transport if it was improved. It is often the case that public transport in cities is very poor. For (7) , we often see old buses and (8) that people would rather not use. High taxes would generate enough money to make the necessary changes. III. Make sentences using the words and phrases given. 1. Mr Thanh/ didn't/ to/ travel/ Korea. 2. It/ 250 km/ Ho Chi Minh City/ Da Nang. 3. My hometown/ used to/ small village. 4. How/ it/ Ha Noi/ Singapore/ past? 5. Lana/ use to/ on foot/ school/ or/ car? 6. He/ used/ good/ student/ but/ now/ poor. IV. Complete the second sentence so that it has a similar meaning to the first. 1. He is not a poor man any more, but he becomes a rich businessman. He used . 2. They didn’t often go to the cinema every Sunday last year. They didn’t use . 3. My hair now is much longer than that in the past. In the past my hair used . 4. I don’t have time to collect stamps as when I was in primary school. I used . 5. Did you often go to the beach when you lived in NhaTrang? Did you use . Unit 8 . I. Choose the correct answer. 1. A is a film that shows real life events or stories. A.action B.documentary C.thriller D.comedy 2. I found the book so that I couldn’t put it down. A.gripping B.boring C.tiring D.shocking 3. A is a film that tries to make audiences laugh. A.horror B.sci-fi C.comedy D.documentary 4. The end of the film was so that many people cried. A.shocking B.moving C.exciting D.boring 5. Mr. Bean’s Holiday is a film - I was laughing from beginning to end. A.hilarious B.violent C.scary D.moving 6. It stars Marlon Brandon as the Godfather. He won an Oscar for his as the boss. A. action B. performance C. direction 7. Shaun of the Dead is a . It's very funny, but it's also a horror film. A. cartoon B. comedy C. sci-fi 8. There's The Princess and the Frog. It's an film from Disney. A. ugly B. animated C. boring 9. The film was so boring. , Jack saw it from beginning to end. A. Therefore B. However C. Although 10. If you want to know which films are on at the cinemas, you should look at thefilm of this newspaper. A. section B. review C. report II. Complete the sentences with the correct form of the adjectives in brackets. 1. It's an film and I'm every time I start watching it. (interest) 2. It was in the lesson because our teacher is in history. (bore) 3. My father is very with my Math examination because of the mark. (amaze) 4. My friend is a very sort of person, but he hates doing activities. (relax) 5. Working all day is very . I get when I enter my factory. (tire) 6. We were all very about the school trip, but it wasn’t an trip at all. (excite) III. Complete the sentences with the correct form of the adjectives in the box. 1. I wish this book weren't so ; I keep falling asleep whenever I try to read it. 2. "Do you think football is ?"- "Oh, I don't think so. I find table tennis is a most suitable sport for myself." 3. I'm right now. Last night I had a terrible nightmare? 4. The film was . Nothing happened. 5. Thomas was very about his new bicycle as a birthday present. He had woken up at 5 a.m. and rode the bicycle around the street. 6. This is a very book about the history of the cinema. I'm learning a lot.

Cho x,y thoả mãn x^2+xy+4y^2<=3 tìm GTLN của S=x+3y

Giúp mình phần trắc nghiệm này với ạ ! MÌNH CẢM ƠN !!!