Một loại phân bón đóng bao 50kg/bao. Em hãy tính tỉ lệ để ghi trên bao theo thứ tự : N, P, K khi trộn 21,43kg ure (CO(NH2)2) với 16,48kg Ca(H2PO4)2 và 7,9kg HCl

Tìm các điểm dừng của hàm số f(x,y)= x^2+y^2-6xy+1

Giúp em bài này với ạ ( kèm hình )

change into passive voice 1He uses milk for making butter and cheese 2.they don't grow coffee on this farm 3.Do you often have bread and milk for your breakfast 4. the company is developing a new procedure 5.my father is washing the car 6.sheila ia drinking a cup of tea 7.mary is cutting the cake with sharp knife 8.who are they keeping in the kitchen 9.what book are people reading this year ? các anh chị giải thích hộ e nha

II. Supply the proper form of DO or MAKE: 1. What……………………you…………….yesterday? I…………………..the washing up. 2. What kind of research was he………………in the laboratory? 3. The President………………………………..a very important speech on TV tonight. 4. The children………………………….too much noise. I can’t work. 5. She asked us to sit down, and then went to…………………..some tea. 6. So far they……………………………..all the presentations for the journey. 7. It’s a great pleasure to……………..conversation with Julia. 8. You should…………………….an effort to………………..your duty. 9. Tom…………………much progress in his study this month. 10. Where…………………your sister often……………………………her hair? 11. Joe sold his old Ford and……………………a profit of $60. 12. Come on, Jane! We’ve been waiting 20 minutes. Please…………….a decision. 13. Albert is always afraid of…………………….mistakes when he speaks English. 14. Next summer we’d like to……………………..an Italian course in French. 15. Don’t worry about your driving test. Just get in the car and……….your best. 16. In Britain, young men don’t have to…………………..military service. 17. Our company……………………most of its business with Europe. 18. Do you mind waiting five minutes? I have to………………….a quick telephone call. 19. I wish this house could clean itself. I hate……………the housework. 20 Her idea of pleasure is sitting in front of the TV………………nothing.

hhhhhhhhggggggggggggggggggggggffffffffffffff

Nốt mấy câu này nữa ạ 328+380+322 382+38+82 283+848+287 372+387+288 835+39+575

Bài 1: Khải triển hằng đẳng thức sau Công thức: (A+B)^3=A^3+3A^2 B+3AB^2+B^3 1) (2x+3)^3 2) (2y+5/3)^3 3) (x^2+2x)^3 4) (x^3+2/x)^3 5) (x^2 y+3/x)^3 Bài 2: Khải triển hằng đẳng thức sau Công thức: (A-B)^3=A^3-3A^2 B+3AB^2-B^3 1) (2x-1)^3 2) (2y-5/3)^3 3) (ab^2-1)^3 4) (x^3-2/x)^3 5) (xy^2-3/x)^3

Vẽ quả cherry 1 vui 1 buồn bằng app paint đi

Tính bằng cách thuận tiện ko cần giải thích tí em phải nộp rùi. 23+50+7 657+243+983 329+480+301 304+234+76 295+382+235 Ai nhanh hơn em cho ctlhn