Mn giúp mình với ạ, cảm ơn mn nhìu ạ

Viết 1 bài thơ về vấn đề ô nhiễm mỗi trường S,C,R,A,P

tả người mà em kính trọng nhất không chép mạng nha mk tự nghĩ ra đó ai chép mạng mk biết ngay

các cậu giải thich giúp tớ dòng m1= V1.Pn dc kh ạ, tớ không hiểu công thức này từ đâu có

Tìm đa thức M biết rằng: 1)M+(5x^2-2xy)=6x^2+9xy-y^2 2)M+(2x^2y-2xy^3)=2x^2y-4xy^3 3)(2xy^2+x^2-x^2y)-M=-xy^2-x^2y+1

Bài 8. Viết câu dưới đay theo cách khác, sử dụng “might’ hoặc “may” Ví dụ : Perhaps Helen is in her office ---> She might be in her office. Perhaps Helen isn’t in her office --> She might not be in her office. 1. Perhaps Helen is busy. __________________________________________________ 2. Perhaps she is working. __________________________________________________ 3. I’m not sure that Liz will come to the party. __________________________________________________ 4. Perhaps she wants to be alone. __________________________________________________ 5. perhaps she was ill yesterday. __________________________________________________ 6. I’m not sure that Sue wil be able to come out with us this evening. __________________________________________________ 7. Perhaps she went home early. __________________________________________________ 8. I’m not sure thats I’ll go out htis evening. __________________________________________________ 9. perhaps she had to go home early. __________________________________________________ 10. Perhaps she was working yesterday. __________________________________________________ 11. perhaps she doesn’t want to see me. __________________________________________________ 12. Perhaps she isn’t working today. __________________________________________________ 13. I’m not sure that we’ll get tickets for the concert. __________________________________________________ 14. Perhaps she wasn’t feeling well yesterday. __________________________________________________ Bài 9. Sắp xếp các từ sau để tạo thành một câu hoàn chỉnh. 1.be/ may/ python/ sleeping/ the/ __________________________________________________ 2. An/ become/explore/ might/ she/ __________________________________________________ 3. anyone/ can/ he/ laugh make. __________________________________________________ 4. plan/ may/ with/ agree/ this/ she. __________________________________________________ 5. happy/ may/ be/ about/ what/./ They/ happened/not. __________________________________________________ 6. go/ might/ a/ see/ doctor/./ __________________________________________________ 7. work/ might/ go/ tomorrow/ ./ I/ not/ to __________________________________________________ 8. not/ to/ party/./ Sue/ might/ come/ the __________________________________________________

CH3COONa->(1)CH4->(2)C2H2->(3) C2H6(4) [từ C2H6 dọc xuốngC2H5CL]->(5) C4H10 GIÚP EM Ạ:(((( E MẤT KIẾN THỨC Ạ CẢM ƠN NHIỀU Ạ!

Bài 6. Sắp xếp các từ sau để tạo thành câu hoàn chỉnh. 1.on/ May/ lan/ be/ will/ Sundy/ 25th / 13 _________________________________________________________ 2. call/ six/ willl/ I/ after/ o’clock/ again/her. _________________________________________________________ 3. you/ free/ morning/ be/ will/ tomorrow? _________________________________________________________ 4. Ho Chi Minh city/ her/ visit/ next year/ will/ parents. _________________________________________________________ 5. go/her/ we/ birthday/ will/ party/ to. ____________________________________ Bài 7. Chọn một động từ thích hợp và sử dụng cấu trúc “ might + V” để hoàn thành các câu sau: Bite break need rain slip wake 1. Take an umbrella with you when you go out. It _________ later. 2. Don’t make too much noise. You ______ the baby. 3. Be careful of that dog. It ____ you. 4. I don’t think we should throw that letter away. We ______ it later. 5. Be careful. The footbath is very icy. You ______ 6. Don’t let the children play in this room. They ______ something.

Tính tổng của 2 đa thức sau và tìm bậc của đa thức thu được 1)4x^2-5xy+3y^2 và 3x^2+2xy-y^2 2)x^3-2x^2y+1 phần 3 x^2y-y^4+1 và -x^3-1 phần 2 x^2y+x^2y-y^4-2

Giúp em hoàn thành chuỗi này với C2H6->C2H4-> C2H6->CO2->NAHCO3 (1) CH3COONA-> CH4->C->CH4->CH3CL (2) [(2) (C3H6)n [(3) C3H7CL (3) C3H8(1)->C3H6->[(4) C3H6Br2 [(5) C3H6(OH)2