Lm và giải thích hộ mình ạ Cần gấp

Lm với giải thích zúp m ạ m cần gấp

Giải giúp mình hệ pt này x+y=2 84x/1050×100+(106×y/2)/1050×100=12,27

Mọi người cho mình hỏi câu này với ạ :(( đáp án là D nhưng câu nào dúng câu nào sai ạ

4. My brother (repair) _____ his car when we (come) __________tomorrow.

Bốn người A B C và D đến một cái giếng lần lượt có 3 cái 1 2 và 4 cái xô lớn giống nhau. Chỉ có một cái xô nhỏ dùng để lấy nước từ giếng. Họ phải hút nước từ giếng theo thứ tự nào để tổng thời gian họ bỏ ra là ít nhất? Thời gian một người đã bỏ ra bao gồm cả thời gian chờ đợi của anh ta. Nếu a đã dành 3 phút và B đã dành 5 phút, thì tổng thời gian họ đã bỏ ra là 8 phút

Cho hàm số y= f(x)/g(x). Khẳng định nào sau đây là khẳng định đúng ? A. Đồ thị hàm số luôn có tiệm cận đứng. B. Đồ thị hàm số luôn có tiệm cận ngang. C. Nếu đồ thị hàm số có đường tiệm cận đứng là x=a thì a là nghiệm của g(x)= 0. D. Nếu a là nghiệm của g(x)= 0 thì đồ thị hàm số có đường tiệm cận đứng là x=a.

Giải toán giúp em với ạ Em đang cầm gấp

IV. Choose the best answer that need correction: 29. Dennis usually drinks coffee with his breakfast, but this morning he drinks tea instead. A B C D 30.They worked in the garden when it started to rain. A B C D 31.We were surprising to hear he is 50. He looks much younger. A B C D 32. You have never been to Ho Chi Minh City before, haven’t you? A B C D V. Choose A, B, C, or D that is closest in the meaning to each of the following question. 33. It has been a long time since they met. A. They haven’t met since along time. B. . They haven’t met for along time. C. They didn’t meet for along time. D. they didn’t meet a long time a go. 34. It is not necessary for you to wear uniform to school on Sunday. A. You needn’t wear uniform to school on Sunday. B. You must wear uniform to school on Sunday. C. You would wear uniform to school on Sunday. D. You can’t wear uniform to school on Sunday. 35. My children are possible in the living room. A. My children will be playing in the living room. B. My children can not be in the kitchen. C. I don’t know my children are in the living room. D. My children might be in the living room.

ĐỀ ÔN TẬP HK II MÔN ANH 8 I. Circle the word whose underlined part pronounced differently from that of others. 1. A. decided B. cooked C. missed D. laughed 2. A. prison B. compile C. competition D. religious 3. A. stops B. thanks C. listens D. rents II. Choose the word that has a different stress pattern from the others. 4. A. scientific B. sociology C. geography D. medication 5. A. volunteer B. accurate C. wonderful D. terrible III. Choose the best answer 6. On Christmas Eve, people often ...................... a tree A. are decorated B. were decorated C. decorating D. decorate 7. He asked me .................................. A. Where I like coffce or not B. Whether I liked coffce C. What I liked coffce D. Which I liked coffce 8. Although we are aware…………..the importance of environment, we still over explore it. A. to B. in C. for D. of 9. Do you mind............................the window? It’s very cold A. close B. closing C. to close D. closes 10. He had his father..................... his watch A. fixed B. fixing C. to fix D. fix 11. Let’s go to the cinema to night. There is a good film on at 7.45 . A. That’s a good idea B. No, I don’t think so C. all right D. very good 12. Nam’s family has been living .................Ha Noi for twenty years. A. over B. in C. on D. at 13. I like this ................... song because it reminds me of my schooldays. A. beautify B. beauty C. beautifully D. beautiful. 14. Tom invited us to come to his party, ....................? A. wasn’t he B. hadn’t he C. didn’t he D. did he . 15. They ______ table tennis when their father comes back home. A. will play B. will be playing C. play D. would play 16. We ......................................... tennis for two hours. A. played B. had playes C. have played D. was playing 17. A nest …………..in the porchsince last week by apair of robins. A. has built B. had built C. has been built D. had been built 18. If you get up early, you..................................be late for school. A. weren’t B. wouldn’t be C. aren’t D. won’t be 19. My father asked us..............................on our playing computer games. A. to cut down B. cut down C. to cutting down D. cutting down 20. Henry………….into the restaurant when the writer was having dinner. A. had gone B. went C. will go D. goes 21. ……………he worked hard, he could not finish the job. A. although B. because C. despite D. because of 22. ...............................I was really tired, I couldn’t sleep. A. Eventhough B. So C. Therefore D. Because of 23. Does she suggest..................................some more butter? A. to buy B. buying C. buys D. bought 24. The new appliance does not only work ...............................but also saves energy. A. effective B. effect C. effectively D. effectiveness 25. You should travel by bike..........................by motorbike to save energy. A. instead of B. therefore C. however D. beacause 26. You should wear ..................to keep your hands warm. It’s very cold outside. A. hats B. shoes C. boots D. gloves 27. This shirt is ..................big that I can’t wear . A. so B. too C. such D. to 28. The students ....................happily when the bell rang. A. played B. are playing C. were playing D. have played Giúp em môn Anh vớiiiiii