Làm hộ em bài toán tìm x này với ạ ( Toán 6 )

Giup minh voi ạ, tu cau 27 đen 40

giúp mik 2 bài này nha mik cần gấp lm bằng cách tiểu học cho mik nha thanks nhìu

11. He will have to stay in hospital. That's what he_____ a. has done b. must do c. must be doing d. must have done 12. Do you have to buy this hat? No, I _____. It isn't necessary. a. mustn't b. won't c. needn't d. don't need 13. you_________wash the car. I just had it done yesterday. a. mustn’t b. needn’t c. might d. can’t 14. It could not tell the difference between Indian music and jazz. a. might not b. may not c. mustn't d. wasn't able to 15. This plane could get over the mountain if it rose to 10,000 feet. This means it______ over the mountains. a. would succeed in getting b. got c. was able to get d. had got 16. The plane was then able to rise. This means it______ a. could rise b. might rise c. might succeed in rising d. rose 17. Byrd knew that he would be able to reach the South Pole. It would be______. a. impossible b. necessary c. able d. possible 18. He ought not______ him but she did. a. to tell b. to telling c. tell d. to have told 19. I’d rather you______ that. a. do b. don't do c. won't do d. didn't do 20. ______ run so fast? a. Does he need b. Need he to c. Need he d. Needs he Mik đang cần gấp Nhanh lên nhé Thêm phần giải thích phía dưới câu trả lời nữa nha

II. Choose the word which has different primary stress from that of the others in each group. 6. a. appliance b. activities c. adventure d. average 7. a. chemical b. affective c. experience d. biology 8. a. primary b. satisfy c. variety d. remedy 9. a. compulsory b. population c. occasionally d. immediate 10. a. favorite b. identify c. influence d. government

Tam giác ABC vuông tại A (AB<AC) O trung tuyến AD, vẽ DM vuông góc AB,DN vuông góc AC, gọi I,K lần lượt của AD,BD chứng minh A. Tứ giác AMDN là Hình Chữ NHật B. Tứ giác DNIK Là hình Bình hành C. tứ giác DIMK hình thoi D. M và N đối xứng nhau qua I

I. Choose the word in each group that has the underlined, italic part pronounced differently from the rest. 1. a. says b. plays c. rays d. stays 2. a. appeared b. formed c. imagined d. vanished 3. a. sensitive b. benefit c. pretty d. remedy 4. a. oranges b. figures c. watches d. classes 5. a. exchange b. children c. teacher d. champagne

1. If I __________the same problem you had as a child, I might not have succeeded in life as well as you have. A. have B. would have C. had had D. should have 2. I __________you sooner had someone told me you were in the hospital. A. would have visited B. visited C. had visited D. visit 3. __________more help, I would call my neighbor. A. needed B. should I need C. I have needed D. I should need 4. __________then what I know yesterday, I would have saved myself a lot of time and trouble over the years. A. had I known B. did I know C. If I know D. If I would know 5. Do you think there would be less conflict in the world if all people __________the same language? A. spoke B. speak C. had spoken D. will speak 6. If you can give me one good reason for your acting like this, __________this incident again. A. I will never mention B. I never mention C. will I never mention D. I don‟t mention 7. If I had known you were asleep, I __________so much noise when I came in. A. didn‟t make B. wouldn‟t have made C. won‟t make D. don‟t make 8. Unless you __________all of my questions, I can‟t do anything to help you. A. answered B. answer C. would answer D. are answering 9. Had you told me that this was going to happen, I __________it. A. would have never believed B. don‟t believe C. hadn‟t believed D. can‟t believe 10. If Jake __________to go on the trip, would you have gone? A. doesn‟t agree B. didn‟t agree C. hadn‟t agreed D. wouldn‟t agree 11. J: “John went to the hospital alone”, K: “If __________,I would have gone with him”. A. had he told me B. he had told me C. he has told me D. he would tell me 12. If you __________, I would have brought my friends over to your house yesterday to watch T.V, but I didn‟t want to bother you. A. had studied B. studied C. hadn‟t studied D. didn‟t study 13. Peter: “Did you need help with your Math last night?”. Mary: “If I had needed, I __________you”. A. would call B. called C. would have called D. will call 14. If someone __________ in to the store, smile and say, “May I help you?” A. comes B. came C. come D. should come 15. “Here‟s my phone number”. “Thanks. I„ll give you a call if I __________some help tomorrow” A. will need B. need C. would need D. needed 16. If I didn‟t work for an accounting firm, I __________in a bank now. A. work B. will work C. have worked D. would work 17. The death rate would decrease if hygienic conditions __________improved. A. was B. is C. were D. had been 18-The education in Japan __________if the basic principles of education had not been taken into consideration. A. would go down B. would have gone down C. went down D. had gone down 19. If there __________, the rice fields could have been more productive. A. had been enough water B. were enough water C. would be enough water D. are enough water 20. The patient will not recover unless he __________ an operation. A. had undergone B. would undergo C. undergoes D. was undergoing

trong các từ : muông thú , khe núi , rừng núi , róc rách , véo von , tinh mơ , tiếng hót đâu là từ ghép

Bài 8. Cho tam giác vuông tại A, đường trung tuyến AM. Trên tia đối của tia MA lấy điểm D sao cho MD = MA. a) Chứng minh AC//BD b) Tính số đo góc ABD. c) Chứng minh rằng tam giác ABC bằng tam giác BAD. d) So sánh độ dài AM và BC.