đổi 11h 30 ra giờ mình vs các bạn ạ xin trân trọng cảm ơn

Chào mn mik là tv ms,có j giúp đỡ Vẽ chipi nhé

Chào mọi người:33 hôm nay mình sẽ ra yêu cầu edit oc của mọi người nhennnn đây là mình: trình cùi :(((

đề: zẽ anime/chibi/... cùng vs 2 hàng nc mắt NL: cúi cùng thì... điều ước của tui cx đã thành sự thật, đó chính là đc hc online :)) nhưng sau khi nghe cô ns tuần sau bắt đầu hc, pk thức khuya dậy sớm, nản quá nên từ bỏ điều ước ròi :v thi xong hết r lên lớp chỉ vc ngồi chs, hc onl chi ko bt?! :V

Các bạn giúp mình với nhé. Cần gấp

Giải giúp em với ạ !!! Em cảm ơn

I. Find the words which has a different sound in the part underline. 1. A. abundant B. travelling C. character D. biogas 2. A. diverse B. drive C. invention D. crime 3. A. designs B. sails C. pedals D. pollutes II. Choose the correct option A, B, C or D to complete the sentences. 4 Which one do you want? -I don't want ___________. A. both B. neither C. either D. each 5. I am interesting in the rice – cooking contest you organized yesterday. A. interesting B. the C. contest D. organized 6. __________ the traffic was bad, I arrived on time. A. Despite B. In spite of C. However D. Although 7. It takes me two hours___________ that letter. A. to write B. write C. writing D. for writing 8. I’m tired of ___________ nothing to do at home. A. to have B. have C. having D. had 9. Please tell him to __________ the light. It is getting dark. A. turn on B. turn up C. turn over D. turn off 10. I am sure I locked the door. I clearly remember __________ it. A. to lock B. to have locked C. locking D. lock 11. We didn’t go out __________ it was raining. A. although B. because C. in spite of D. despite 12. An is a hard-working student. I think An___________ pass the exam easily. A. would B. has C. was D. will 13. In order to save energy, don’t forget to __________ the lights before you leave. A. turn B. turn on C. turn off D. turn of 14. The energy consumption__________ as much as possible. A. will reduced B. will be reduced C. be reduced D. reduced 15. My father __________ a lot last year but this year he doesn’t any more. A. used to smoke B. smokes C. gets used to smoke D. smoking 16. Remember not to park in front of a zebra…………….. A. crossing B. cross C. crossed D. across 17. …………….we lost the game, we were happy that we played well. A. Although B. Because C. If D. Nevertheless 18. The actress arrived __________ a helicopter. A. on B. in C. with D. by 19. “Recycling” means creating new products from…………….materials. A. use B. using C. used D. to use 20. Drinking and driving is one of the most common……………….of traffic accidents. A. reasons B. effects C. sources D. causes 21. Solar energy - one type…………………sources – is being used more and more. A. renewable B. non-renewable C. renewing D. renewed 22. –“Does that red motorbike belong to your mother?” - “No, ………………….is white.” A. she B. her C. hers D. mine 23. Overpopulation causes a lot of problems,………..? A. isn’t it B. doesn’t it C. do they D. don’t they 24. Nuclear power ...............................in the future. A. will replace B. replaced C. will be replaced D. replaces 25. It’s really difficult to .......................a bicycle up the hill A. fly B. drive C. pedal D. sail 26. At this time next week, we .................a test on sources of energy A. will take B. take C. will be taking D. are taking 27. My children often sleep while they are ................a plane. A. in B. on C. by D. 0 28............books are here. ..............are there. A. Theirs / ours B. Their / our C. Theirs / our D. Their / ours 29. Many countries are developing high- speed trains as part of their public ..............system. A. transport B. travelling C. carrying D. road 30. The boy was so ……………..by the film. A. frightened B. frightening C. frighten D. to frighten 31. At this time next month, we……………the new flying boat. A. are testing B. are going to test C. will test D. will be testing 32. Alternative sources of energy ……………….in the future A. develop B. will be developing C. developed D. will be developed 33. How about going to the movies tonight, John? – That sounds ....................... A. interest B. interested C. interesting D. interestingly 34. Coal, oil and natural gas is called………………..sources of energy A. renewable B. non- renewable C. renewed D. non- renewed 35. We will cut down on the use of natural gas because it is …….… & harmful to the environment. A. plenty B. limited C. available D. abundant 36. Which of the following is renewable source of energy? A. oil B. wind C. natural gas D. coal 37. Some new energy-saving bulbs …………. in the dining-room. A. will put B. will be putting C. will be put D. will being put 38. Peter never goes to school late, .................. he? A. does B. did C. doesn’t D. didn’t 39. All the slums in this area ___________ for new multi-story buildings next year. A. demolished B. will demolished C. will demolish D. will be demolishe 40. Over population is causing __________ problems than we can imagine. A. more B. less C. fewer D. worse

Giải cho e với ạ. .

Cho tam giác ABC cân tại A, góc A = góc C = 80 độ . Từ B và C kẻ các đường thẳng cắt các cạnh tương ứng ở D và E sao cho CBD = 60 độ và BCE = 50 độ . Tính BDE ?

Chứng minh rằng:với mọi số nguyên n ,phân số 12n+1 / 2n.(n+2) là phân số tối giản giúp em vs ạ!