cho hinhtam giac co S 5/8 m2 va chieu cao 1/2 m Tinh doc dai day hinh tam giac do

tính nguyên hàm sau: 2x. ln(x-1)dx Giúp Mình với. Cảm ơn nhìu.

MULTIPLE CHOICE 1. The tiger succeeded in __________from the farmer. A. freeing B. running C. getting D. going 2. Little Pea was very happy with the _______of the fairy. A. equipment B. escape C. precaution D. appearance 3. The cattle are eating grass in the field. They are _______. A. feeding B. working C. swallowing D. grazing 4. He was late, but _________his friends waited for him. A. luckily B. magically C. lately D. cruelly 5. We can’t stand people who are cruel ________animals. A. about B. to C. with D. on 6. Our pupils are _________ about the holidays. A. excited B. upset C. annoyed D. sociable 7. My grandfather often wears ________clothes on New Year’s Day A. mobile B. traditional C. magical D. straight 8. When did the prince fall in love __________the princess? A. to B.at C. with D. for 9. After his wife died, he married again. He __________. A. reoccupied B. remarried C. repeated D. rearranged 10. ______________ is necessary, it helps you practice the words more times. A. Revision B. Repetition C. Rearrangement D. Recognition 11. You can focus on important words by underlining or ________________ them. A. highlighting B. marking C. noting D. A & B are correct 12. _______________ is the study of the life of animals and plants. A. Biology B. Chemistry C. Literature D. Civics 13. So they _____________ a piece of paper on which new words with their meaning and use are written everywhere in the house to learn it at any time. A. put B. stick C. get D. post 14. There are different ______________ of learning new words. A. methods B. ways C. processes D. all are correct 15. Some people write a list of new words with the meaning in their _________________. A. explanation B. mother tongue C. mother language D. translation 16. Don’t try to learn all the new words you __________________ in a day. A. get into B. get by C. come across D. come into 17. Some people think that learning vocabulary ____________ is the best way. A. by mind B. in mind C. by heart D. with heart 18. He tried to give up smoking, but he couldn’t break the _________________. A. pastime B. habit C. favor D. hobby 19. We were born in Vietnam, Vietnamese is our _________________. A. first language B. mother tongue C. foreign language D. A & B are correct 20. He arrived early __________________ a good seat. A. so that getting B. so that to get C. in order to get D. in order get 21. _______________ is the study of the earth and its countries, mountains, rivers, weather, etc. A. Geography B. Chemistry C. Mathematics D. Physics 22. Can you ___________ what time the train leaves? A. find out B. find up C. find on D. find in 23. I made some interesting ______________ about the film. A. comments B. commences C. commends D. commenting 24. To remember new words, you have to __________ them often. A. rewrite B. replace C. revise D. repeat 25. After every study term of semester students usually receive their __________. A. marks B. grades C report card D. report book 26. Through that report card they’ll know what subject they need_________. A. to study B. to improve C. to complete D. to finish 27. However he had problems with Spanish ________, because some of Spanish sounds are really hard. A. vocabulary B. grammar C. pronunciation D. spelling 28. ___________it rained heavily, all the members of the young pioneers club still came on time. A. Because B. Although C. Until D. As 29. She can neither speak nor hear. She is a ________ child. A. blind B. deaf C. handicapped D. deaf-mute 30. We received 100 _____________ for that job. A. applications B. favors C. hobbies D. activities 31. You need to __________ before the end of August. A. join B. enroll C. participate D. encourage 32. We like _____________ activities such as fishing and camping. A. outdoor B. inside C. indoor D. outside 33. “May I help you?” – “___________________” A. How can I help? B. What can I do for you? C. Yes. That’s very kind of you D. I’m afraid I’m busy now. 34. The _________ is the land, water and air that people, animals and plants live in. A. environment B. program C. community D organization 35. If you want to join the club, you’ll need to fill _________ an application form. A. at B. on C. to D. out 36. He collects stamps as a _____________. A. pastime B. hobby C. favor D. result 37. We refused to ______________ her as a member of the club. A. encourage B. raise C. recycle D. enroll 38. She is studying hard __________ the final exams. A. but for passing B. in order to pass C. so as pass D. so that she pass

Mn giúp em với Câu hỏi: Trong lịch sử xã hội loài người,nhà nước xuất hiện khi nào?Tại sao khi đó nhà nước xuất hiện?

số tiền mua 1 quả dưa và 1 quả thanh long là 25 nghìn đồng. số tiền mua 5 quả dưa và 4 quả thanh long là 120 nghìn đồng. hỏi giá mỗi quả dưa và mỗi quả thanh long bao nhiêu ?

Cho biểu thức Q=a+3/a-2 a,Với những giá trị nào của a thì Q là giá trị nguyên ? b,Với những giá trị nào của a thì Q là một phân số tối giản ?

Giải hộ mình mấy câu cân bằng phản ứng với ạ

Giúp e với ạ 1. I had someone paint the gate last week. I had the gate_____________________________________________________________ 2. Someone will type the letter . The letter_______________________________________________________________ 3. I am going to have Peter wash my car tomorrow. I am going to have my car ___________________________________________ 4. Have you had someone repair your shoes yet? Have youyou’re your shoes _______________________________________________ 5. A mechanic repaired my father’s car yesterday My father’s car ____________________________________________________ My father had a mechanic ___________________________________________ My father had his car ________________________________________________

tìm số nguyên x,biết: a) x.(x-2)=0 b) x.(x-2)>0 c) x.(x-2)<0 giúp mình nha

Mn giúp em vs ạ Ex1. Combine each pairs of these sentences, using in order to / so as not to : 1. I have to go to the bank. I want to change some money. => ……………………………………………………………………………………… 2. He left his rifle outside. He didn’t want to frighten his wife. => ……………………………………………………………………………………… 3. Nguyen is studying English. He wants to go to an American university. => ……………………………………………………………………………………… 4. He read only for short periods each day. He didn’t want to strain his eyes. => ……………………………………………………………………………………… 5. They got up very early. They wanted to get to the top of the hill before sunrise. => ……………………………………………………………………………………… 6. We must keep our gloves on. We don’t want to get cold. => ……………………………………………………………………………………… 7. Nam knocked on the door. He wanted to wake me up. => ……………………………………………………………………………………… 8. He studied hard. He didn’t want to repeat classes. => ……………………………………………………………………………………… 9. I am buying paint. I want to repaint the gate of my house. => ……………………………………………………………………………………… 10. I took off my shoes. I didn’t want to make any noise. => ……………………………………………………………………………………… 11. I am saving money. I want to go to Canada to visit my cousin. => ……………………………………………………………………………………… 12. He was playing softly. He didn’t want to disturb anyone. => ………………………………………………………………………………………