{(a+2)x-y=13 {ax+y=a tìm a để hệ có nghiệm (x;y) sao cho y-x < hoặc = 0

EXERCISE 1.: Put a (n) or the in the numbered blanks. 1. This morning I bought (0) a newspaper and (1)______ magazine. (2)______ newspaper is in my bag, but I don't know where I put (3) ______ magazine. 2. I saw (4)_______ accident this morning. (5)_______ car crashed into (6)______ tree. (7)______ driver of (8)______ car wasn't hurt, but (9)_______ car was badly damaged. 3. There are two cars parked outside: (10)_______ blue one and (11) _______ grey one. (12)_______ blue one belongs to my neighbours; I don't know who (13)_______ owner of the grey car is. 4. My friends live in (14)_______ old house in (15)_______ small village. There is (16)_______ beautiful garden behind (17)_______ house. I would like to have (18)_______ garden like that.

Ai giúp mik với hứa sẽ vote 5 sao

XI. Chọn một đáp án đúng nhất ( A, B, C hoặc D) để hoàn thành mỗi câu sau: 1. What do students often do____________ recess? A. in B. on C. at D. Of 2. My brother never goes to school late and____________. A. so does Lan . B Lan doesn’t, either C. Lan don’t, either. D. neither doesn’t Lan 3. It’s very important____________ your hand before meals. A. Wash B. to wash C. washing D. washed 4. We should keep our teeth____________. A. be clean B. to be clean C. clean D. cleanly 5. She works____________ a hospital. She takes care____________ sick people A. in/ at B. at / for C. of / at D. in / of 6. Remember____________ home by ten o’clock. A. to get back B. getting back C. to getting at D. for getting 7. You are too fat. You should eat more____________. A. Vegetables B. Milk C. Fish D. Meat 8. He broke the vase because he was____________. A. Careful B. Carefully C. carelessly D. careless 9. Would you like milk in your coffee? – Yes____________, please A. a few B. a little C. little D. Few 10. I don’t like this book because it is very____________. A. Bored B. interesting C. boring D. interested II. Điền dạng đúng của từ in hoa vào chỗ trống để hoàn thành mỗi câu sau: 1. Nobody likes him because his hair is always____________ and dirty. TIDY 2. In Vietnam, one of the most popular____________ at recess is talking. ACT 3. She is a very____________ singer. People don’t like her at all. POPULAR 4. This knife is____________ - It can’t cut anything. USE 5. Our students are going to have a____________ check-up next Monday. MEDICINE 6. In the countryside, people often know all the people in their____________. NEIGHBOR 7. You must be careful when playing video games because they can be____________. ADDICT 8. I’d like a nice____________ orange JUICE 9. Edison’s most famous____________ was the electronic bulb. INVENT 10. This dictionary is very____________ for you to learn English USE III. Cho dạng đúng của động từ trong ngoặc để hoàn thành mỗi câu sau: 1. He prefers listening to music to (watch)____________ television. 2. He (live)____________ in London for two years and then moved to Liverpool in 2010. 3. She gets fat because she always tastes things while she (cook)____________. 4. Bill decided (buy)____________ rather than a used one. 5. George is interested in (take)____________ an art class. 6. Listen to those people! What language____________ they (speak)____________ ? 7. When I was small, I used to (go)____________ on bare foot . 8. Oh! This bag is very heavy . I can’t carry it. – Don’t worry, I (help)____________ you with it. 9. What would you like (eat)____________, Ba? – I like eating fish. 10. They (have)____________ a party tomorrow. IV.Viết lại những câu dưới đây sao cho nghĩa không thay đổi. 1. She eats more chocolate than I. I ……………………………………………………………. 2. Vinh keeps forgetting his homework. Vinh is ……………………………………………………………. 3. Keeping the environment clean is very important. It’s…………………………………………………………………. 4. No one helped Lan to do the homework. Lan ……………………………………………………………… 5. It’s three years since I last spoke to her. I haven’t…………………………………………………………… 6. Tam doesn’t type as fast as she used to. Tam used …………………………………………………………. 7. How long is it since you used the car? When …………………………………………………………….. 8. We started living here 15 years ago. We have…………………………………………………………... 9. Let’s meet inside the centre ,at the cafe corner? How………………………………………………………………. 10. Nam is very strong, he can do heavy work. Nam is strong ……………………………………………………………….. THE END Mn giúp mình nhoa

GIúp mình với Đốt cháy hoàn toàn 3,36 lít khí metan (đktc) .Hãy: a. Viết phương trình của phản ứng xảy ra . b. Tính thể tích không khí cần dùng, biết không khí chứa 1/5 là thể tích khí oxi. c. Tính thể tích cacbon đioxit tạo thành. Giả sử hiệu suất phản ứng là 100% và các khí đo ở đktc. d. Dẫn sản phẩm cháy qua dung dịch Ba(OH)2 dư 0,5M. Tính : + khối lượng kết tủa tạo thành. + Thể tích dd Ba(OH)2 đã dùng

I. Find the word which has a different stress pattern from the other (dịch nghĩa hộ em câu này với ạ. E lên google mà k ra)

Làm giúp vs ạ viết ra giấy rồi gửi nha

" Hãy nói về 1 thành phố mà em vừa mới thăm"( 50-60 từ) qua bài unit 9 vừa mới học k chép mạng k chép của ng khác mk cần gấp

Câu 1:Complete the sentence with too, either, so or neither: Hoa doesn't like durian. Her uncle _________ Câu 2:Complete the sentence with too, either, so or neither: Hoa likes spinach and her uncle_________ Câu 3 :Fill in the blank with preposition: Will they come _____ dinner tonight Câu 4 :" I don't like pork" "______" A. So do I B. So am I C. I do, too D. Neither do I Giusp mk với ạ hứa vote 5* cho câu trl đúng Xin cảm ơn

1. The restaurant has the (repute / knowledge / reputation) for serving some of the finest food. 2. If you study at the university, you can live in (caravan / dormitory / private room) on campus. 3. We think that with our solidarity we can (overtake / overdo / overcome) the difficulty. 4. We won’t go out (if not / unless / if ) it stops raining. 5. Choose the word whose underlined part is pronounced differently from the others. (speaking / reading / learning / pleasing) 6. I can complete a (speak / spoken / spoke) English test if you want. 7. I wish we (will go / go / would go) shopping together. 8. Choose the word whose underlined part is pronounced differently from the others. (picture / cure / lecture / furniture) 9. If you want to get good marks, you (will / may / must) study harder. 10. Choose the word whose underlined part is pronounced differently from the others. (nation / question / intention / description