`3 1/2 - 4 2/3 + |3/4 - 2 1/3| - (5/6 - 7/4) + 5 1/2 - 3`
`= 7/2 - 14/3 + |3/4 - 7/3| - (5/6 - 7/4) + 1/2 - 3`
`= -7/6 + |3/4 - 7/3| - (5/6 - 7/4) + 1/2 - 3`
`= -7/6 + |19/12| - (5/6 - 7/4) + 1/2 - 3`
`= -7/6 + 19/12 - (5/6 - 7/4) + 1/2 - 3`
`= -7/6 + 19/12 + 11/12 + 1/2 - 3`
`= -7/6 + 5/2 + 1/2 - 3`
`= -7/6 + 3 - 3`
`= -7/6 + 0`
`= -7/6`
Đáp án:
3.
Giải thích các bước giải:
$3\dfrac12-4\dfrac23+\left|\dfrac34-2\dfrac13\right|-\left(\dfrac56-\dfrac74\right)+5\dfrac12-3\\=\dfrac72-\dfrac{14}3+\left|\dfrac34-\dfrac73\right|-\dfrac{-11}{12}+2\dfrac12\\=\dfrac{-7}6+\left|\dfrac{-19}{12}\right|+\dfrac{11}{12}+\dfrac52\\=\dfrac{-7}6+\dfrac52+\dfrac{19}{12}+\dfrac{11}{12}\\=\dfrac43+\dfrac53\\=3$
Làm nhanh giúp mình 10p thôi ạ , mình sẽ cho 5*
Giải giúp em mấy bài này với ạ Nhớ ghi các bước ra giúp em
Ex4: Complete the sentences, using superlative 1. We stayed in (bad) ….hotel of the whole city. 2. People say that it is __ (funny) film of the year. 3. What is………..(tall) building in the world? 4. This is ……..(expensive) camera in the shop. 5. Many people say that Venice is (beautiful) city in the world.
Hóa thân thành nhân vật Gióng kể lại toàn bộ câu chuyện Thánh Gióng Giúp em với ạ em sẽ vote cho người trả lời nhanh nhất 5☆
giúp mình với Rewrite the sentences with WISH 1. I don’t know many people in Hanoi (and I’m lonely) -> I wish …………………………………………………………… 2. I don’t have a car (and I need one) -> I wish …………………………………………………………… 3. Lan isn’t here (and I need to see her) -> I wish …………………………………………………………… 4. I can’t go to the party(and I’d love to) -> I wish …………………………………………………………… 5. It’s hot (and I don’t like hot weather) -> I wish …………………………………………………………… 6. I am not as handsome as he is. -> I wish …………………………………………………………… 7. Tomorrow is a workday. -> I wish …………………………………………………………… 8. We have to work this Saturday. -> I wish …………………………………………………………… 9. He doesn’t want to go to school tomorrow. -> He wishes ……………………………………………… 10. They are sorry they are going tonight. -> I wish …………………………………………… 11. He doesn’t want to go to school today. -> He wishes ……………………………………………… 12. His voice is too low for us to hear. -> I wish …………………………………………………………… 13. My uncle isn’t now to give me any advice. -> I wish …………………………………………………………… 14. He does a lot of work. -> He wishes ……………………………………………
Seventy percent of people in Viet Nam live in rural areas. Most of these people (1) their living by caring for farm animals like pigs. Other common jobs are crop farming and fishing. For many of these farmers and fishermen, animal and plant waste is still a problem. Many women and children cook meals using traditional cooking fuels. They also spend many hours (2) wood and other materials to burn. This process takes time and also uses a lot of natural resources. Moreover, they suffer the same health (3) . Cooking was a difficult and dangerous job. The kitchen was smoky, and the black ash would make people cough, and (4) pain in the eyes. But a biogas system can (5) all of these problems! It can turn animal or plant waste (6) ______ valuable resources – such as cooking fuel, electricity, and plant fertilizer. First, an expert must build a system of pipes and tanks. This biogas system contains and manages the decaying process of animal or plant waste. To use the biogas system, a farmer must move animal waste into a pipe with water. These pipes bring the waste to a tank (7) in the ground. This tank is called a bio-digester. Air cannot enter this tank. In this contained environment, natural bacteria decay the waste material. (8) the waste decays in the bio-digester, it (9) two things – biogas and slurry. The biogas rises to the top of the tank. The pressure from the gas pushes the liquid slurry into (10) . Now people can use both the biogas and the slurry. 23.1. A. do B. look for C. earn D. take (1 Điểm) A B C D 24.2. A. looking B. collecting C. keeping D. controlling (1 Điểm) A B C D 25.3. A. concerns B. importance C. businesses D. involvements (1 Điểm) A B C D 26.4. A. bring B. hurt C. make D. cause (1 Điểm) A B C D 27.5. A. solve B. deal C. match D. delete (1 Điểm) A B C D 28.6. A. to B. into C. at D. in (1 Điểm) A B C D 29.7. A. bury B. burying C. buried D. being buried (1 Điểm) A B C D 30.8. A. Because B. Moreover C. Although D. As (1 Điểm) A B C D 31.9. A. produces B. brings C. gets D. makes (1 Điểm) A B C D 32.10. A. the tank B. no tank C. the same tank D. another tankTrình đọc Chân thực (1 Điểm) A B C D
. Cho tam giác ABC vuông tại A, đường cao AH. Gọi M là trung điểm của HC, K là trung điểm của AH. a) Chứng minh MK vuông góc với AB. b) Chứng minh BK vuông góc với AM. đường tb của tam giác hộ e với ạ
Tổng của ba số bằng 9. Tổng của số thứ nhất và số thứ hai bằng 5,6. Tổng của số thứ hai và số thứ ba bằng 5,1. Vậy số thứ nhất là , số thứ hai là , số thứ ba là .
viết lời chúc chân thành nhân dịp trung thu này nhé, đừng ngắn quá :))
So sánh khớp động, khớp bán động và khớp bất động
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