hãy mô tả các tập hợp sau bằng cách nêu dấu hiệu đặc trưng các phần tử của nó C= ( 1;1/2;1/3;1/4;1/5)

2$\sqrt{20}$ - $\sqrt{50}$ + 3$\sqrt{80}$ `-` $\sqrt{320}$ (Tính)

Vẽ ma 👻 hoặc mầm hoặc cái gì đó bạn thấy cute là được nhớ đẹp nhoa

Các bạn làm ra tập giúp mình nha. Viết bằng bút bi xanh(nếu có)

Các bạn làm ra tập giúp mình nha. Viết bằng bút bi xanh(nếu có)

nhanh giúp mik vs ạ ai đúng 5 sao và ctlhn

Giải phương trình nghiệm nguyên : y ²=1+ √9-x ²-4x

LÀm hộ em cầu này với ạ gấppppp

Cho dd Na2CO3 20% t dụng vừa đủ với 136.875g dd HCl 8% ( giúp mình câu c thôi ạ) Cảm ơn nhìu a) Tính mdd Na2CO3 b) Tính m CO2 c) tính nồng độ % của dd sau phản ứng

Exercise 2: Chọn phương án đúng 1. They take their children to the park every day. A. lovely African small young B. African small young lovely C. small young lovely African D. young lovely African small 2. At first sight I met her. I was impressed with her . A. big beautiful round black eyes B. beautiful black big round eyes C. beautiful big round black eyes D. beautiful round big black eyes 3. This is a picture of a bus. A. red bright London B. bright red London C. London bright red D. London red bright 4. Lara goes to a temple every week. A. great big ancient Buddhist B. Buddhist great big ancient C. ancient great big Buddhist D. big great ancient Buddhist 5. There are some pictures in this newspaper. A. white interesting computer-generated new B. computer-generated white interesting new C. interesting new white computer-generated D. new interesting computer-generated white 6. She is doing extremely well in her graduate course. A. intensive one -year English B. one -year English intensive C. intensive English one-year D. English intensive one-year 7. During the winter I like having a house. A. pretty small red wooden B. wooden pretty small red C. small pretty red wooden D. red wooden pretty small 8. I would like to have sports shoes to run in the park. A. grey medium leather comfortable B. comfortable medium grey leather C. comfortable leather grey medium D. medium leather comfortable grey 9. They say he's a student for his age. A. tall mature brilliant B. mature brilliant tall C. brilliant tall mature D. tall brilliant mature 10. The speaker is a professor. A. old short Spanish kind B. kind short old Spanish C. Spanish kind old short D. kind Spanish short old 11. My sister lives in a apartment. A. nice wooden new B. new nice wooden C. nice new wooden D. wooden nice new 12. My cousin bought a bowl. A. blue ancient lovely small B. lovely blue small ancient C. small blue ancient lovely D. lovely small ancient blue 13. They cook a meal for their children. A. delicious big traditional Vietnamese B. Vietnamese delicious big traditional C. traditional delicious big Vietnamese D. big delicious traditional Vietnamese 14. They are trying to build a house. A. four-bedroom elegant modern Italian B. modern elegant four-bedroom Italian C. Italian elegant four-bedroom modern D. elegant four-bedroom modern Italian 15. His brother presented her a clock. A. oval nice Japanese digital B. nice oval digital Japanese C. digital oval Japanese nice D. digital Japanese oval nice 16. The old man owns a coffee table. A. French beautiful round old B. beautiful French old round C. old round beautiful French D. beautiful old round French 17. My father has a box. A. old small black Turkish B. small old Turkish black C. small old black Turkish D. small Turkish old black 18. Jack’s father bought him a(n) bike as a birthday gift. A. blue Japanese expensive B. expensive Japanese blue C. Japanese expensive blue D. expensive blue Japanese 19. She is good at creating paintings. A. interesting Vietnamese new square B. square Vietnamese new interesting C. Vietnamese interesting square new D. interesting square new Vietnamese 20. My mother would like to buy a bag. A. big plastic blue Russian B. big Russian blue plastic C. big blue Russian plastic D. Russian plastic big blue