Một xí nghiệp sản xuất khẩu trang dự định sản xuất mỗi ngày 3.000 chiếc khẩu trang trong thời gian nhất định thực tế do tình hình dịch bệnh covid-19 diễn biến ngày càng phức tạp nên mỗi ngày xí nghiệp đã sản xuất thêm 400 chiếc khẩu trang do đó xí nghiệp đã hoàn thành công việc sớm hơn dự định hai ngày và còn sản xuất tên 1.200 chiếc khẩu trang nữa tính số chiếc khẩu trang mà xí nghiệp dự định sản xuất

Cho tam giác ABC nhọn, góc ABC= 60 độ, đường cao BE và CF. Tính góc AEF.

I. Find the word whose underlined part differs from the other three in pronunciation 1. A. designers B. benefits C. symbols D. poems 2. A. limited B. awarded C. dripped D. attended II. Find the word that differs from the other three in the position of primary stress 3. A. separation B. impression C. compulsion D. instruction 4. A. consist B. divide C. depend D. mention III. Choose the word or phrase (A, B, C or D) that best fits the space in each sentence 5. Today our teacher gives us some ___________ on how to save energy at home. A. advice B. advise C. advises D. advised 6. You should choose the ___________ class because you are new to English. A. beginner B. intermediate C. advanced D. higher 7. We are looking forward ___________ with the new manager. A. to work B. to working C. work D. working 8. Justin said he ___________ the following day. A. returns B. would return C. will return D. returned 9. 1All the teachers here are ___________ . A. good-qualified B. Enough qualified C. well-qualified D. too-qualified 10.Nga: " That's an excellent painting, Lan ! " __ Lan: "___________" A. You're welcome B. Well doneC. No problemD. It's nice of you to say so 11.Try to do more grammar exercises ___________ to improve your writing skill. A. quietly B. quickly C. fast D. regularly 12.I have lived in Ho Chi Minh City ___________ 10 years. A. to B. since C. for D. from 13.Islam is the country's official ___________ in Malaysia. A. education B. religion C. language D. song 14.My mother is very tired, ___________ she tries to finish the housework. A. but B. and C. or D. however 15. Natural disasters always bring human injuries and -- A. resources B. damage C. preparations D. shortage 16. Thanks to the experts’ ----, people know how to live with earthquakes . A. luxuries B. innovations C. instructions D. enhancement 17. A: “ I’ve passed the entrance exam.” B: -------- - A. That’s a good idea . B. Well done C. You’re welcome D. Please, go ahead. 18. Today, farmers prefer --------for their growing because it’s safe for our living environment A. pesticide B. chemical fertilizer C. compost D. garbage 19. Let’s -------family tradition with many celebrations . A. support B. satisfy C. nominate D. enhance 20. ------their well- prepared exams, some candidates seem unsatisfied with their results. A. Though B. In spite C. Because D. Despite 21. A: Are there any -------in getting information from the internet in your living place? B: Yes. Sometimes, I can’t get access to. A. limitations B. advantages C. convenience D. benefits 22. What a ( an ) -------young lady! She often understands as well as gives her friends sincere advice on how to solve their troubles. A. humorous B. active C. considerate D. traditional 23. She used to be excellent at social subjects, art and music. She wants to be an ---------for newspapers. A. engineer B. expert C. artist D. editor 24. Don’t be afraid of these dogs. They are friendly pets. They are ----- A. polluted B. fresh C. harmless D. useful 25. Let’s collect unused clothes for the poor ! - _____________________________ A. Yes, I am B. Please do C. Don’t mention it D. Yes, let’s do that. GIUPPPPPPPPPP TUIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII DOIIIIIIIIII NHAAAAAAAAAA

Giải giúp mình với an, mình đang cần gấp á

V. Give the correct form of the verbs in brackets. 1. Solar energy is used to (heat) water. 2. A lot of people would be out of work if that factory (close down). 3. Alaska, a state in the USA, (face) both the Arctic Ocean and the Pacific Ocean. 4. I (have) my Vietnamese class at 2.30 p.m. this Sunday afternoon. 5. Who you (talk) on the phone when I came to meet you yesterday? 6. She intends (participate) in the program called "The survivor” to experience the life in an isolated island. 7. It seems that many houses (damage), and thousands of people were homeless. 8. The number of people rescued in the disaster (be) 5.000. 9. I learnt from the news on TV that the earthquake (destroy) hundreds of houses. 10. For the past few years, many parents (send) their children to the English centres to study English with native teachers. Làm nhanh giúp mình nha!

Giải phương trình sau: (2x+1)(x-3) < 2

Một con lắc đơn dao động với chu kỳ2 s ở20 C. Tính chu kỳdao động của con lắc ở30 C. Cho biết hệ số nở dài của dây treo con lắc là λ=2.10-5 K-1

Vd: câu 15 :a,c,d nhóm 2 đáp án b Câu.....a,b,d đọc là u. Đáp án C Làm theo hướng dẫn trên nhé Thank you.

Giup mình vs hai câu luôn nha Thanks nhiều

giải pt: a) căn bậc 4 (x) + căn bậc 4 (97-x) = 5 b) 2xy - √(x²y- x²/4) - 2. √(y²x-y²)=0