BÀI 9 Cho vuông tại A, có AC = 12 cm, BC = 13 cm. Gọi I là trung điểm của BC, Trên tia AI lấy điểm K sao cho IA = IK. a/ Tính AB b/ Chứng minh từ đó suy ra là tam giác vuông. c/ Gọi M là trung đ của AC. Chứng minh MB = MK..

Finish the second sentence in such a way that it means the same as the sentence printed before it. 1. The furniture was too old for us to keep. → It was ................................................................................................................................................... 2. Nobody has cleaned the streets this week. → The streets ........................................................................................................................................... 3. While mending the road, they accidentally blocked our water pipes. → They accidentally cut .......................................................................................................................... 4. He brought the umbrella along but it didn’t rain. → He needn’t ........................................................................................................................................... 5. While I strongly disapprove of your behavior, I will help you this time. → Despite ................................................................................................................................................ 6. The underground is quick and cheap. → The underground is ............................................................................................................................. 7. He was annoyed because his secretary came late to work. → He objected to ..................................................................................................................................... 8. Neil regrets having sold his car. → Neil wishes .......................................................................................................................................... 9. The child ran out because of the strange noise. → The strange noise ................................................................................................................................ 10. Immediately after his arrival, things went wrong. → No sooner ............................................................................................................................................ There is a mistake in the four underlined parts of each sentence. 1. Jason’s professor had him to write his thesis many times before allowing him to present it A B C to the committee. D 2. I think Helen is accustomed to work eight hours a day. A B C D 3. The more frequent you exercise, the greater physical endurance you will have. A B C D 4. Only when you have had a chance to know various occupations you will decide on your career. A B C D 5. I tried to do everything to contact John two weeks ago but so far I don’t receive his reply. A B C D 6. Most students were able of finding good jobs three to six months after graduation. A B C D 7. The letter was sent by special delivery must be important. A B C D 8. Because the torrential rains that had devastated the area, the governor sent the National Guard to A B C assist in the clean-up operation. D 9. My brother attends an university in the Midwest which specializes in astrology. A B C D 10. Although Mark has been cooking for many years, he still doesn’t know to prepare French foods A B C D in the traditional manner.

Các bạn làm giúp mình 2 bài này . Bài 7 phải trình bày đúng và đủ mình cho 5*. Cảm ơn !!!

hãy lập luận cho luận điểm " Sách là người bạn lớn" bằng cách trả lời những câu hỏi sau : + Luận điểm đó có những luận điểm phụ nào? + Luận điểm đó có ý nghĩa thực tế và tác dụng ntn? + Làm thế nào để thực hiện luận điểm ấy? giúp mik với mn, làm nhanh giùm mik nhoaaa!!!!

giải phương trình: 3(x^2+2x-1)^2 -2(x^2+2x-1)^2 +5x^2=0

Chọn đáp án đúng nhất: 1. Using telepathy is a way _________ instantly by thought. A. to communicate B. communication C. communicating D. communicate Chia động từ trong ngoặc: 2. We must use our natural resources á economically as possible because they are not ___________ (limit) Hoàn thành câu: 3. All fights had to be cancelled as a ressult of the pilots' sudden strike. => Because 4. "How many planets are there in the Solar System, Nguyen?" (asked) => The science teacher 5. The storm destroyed his house completely and now he is living with his friends. (was) => His house 6. The science teacher said "Scientist in health care sector may develop a cosmetic powder which can help the skin cells grow again in the future" (might) => The science teacher said 7. Because the airport is located near our neighborhood, we must suffer from noise pollution every day. (if) => We wouldn't

Giúp mình bài 6 và 7 nhé Cảm ơn

câu 1 thôi nha mik đang cần gấp

viết một đoạn văn ngắn nói về cảm xúc của em khi được thưởng thức một tác phẩm văn nghệ (truyện, thơ, phim, ảnh, tượng…), trong đoạn văn đó có câu chứa thành phần tình thái hoặc cảm thán.

tìm các số nguyên x,y thỏa mãn x^2-2xy+3x-y=20