Muốn nhân một số thập phân với một số thập phân ta làm thế nào?

I. Chuyển các câu sau sang câu bị động 10. They sent me a present last week. 11. She gave us more information. 12. The chief engineer was instructing all the workers of the plan. 13. They can’t make tea with cold water. 14. Somebody has taken some of my books away. 15. They will hold the meeting before May Day. 16. After class, one of the students always erases the chalk board.

Trình bày đặc điểm của lớp vỏ khí quyển

Hãy nhận biết các chất sau bằng phương pháp hóa học: a) CO2, CH4, C2H4 b) C2H4, C6H6, CH4 Giúp e mn ơiii

thay đổi câu thành thụ động 1.they opened the road 10 years ago 2.he didnt finish th test yesterday 3.do they teach english in primary school ? 4.nobody sweep this street today 5.did students close the door before going home yesterday

Làm hộ mk bài đầu tiên nha thanks mk cần gấp trc 16h

Cho tam giac ABC (goc A<90 do),duong cao AH,ve cac diem E,F sao cho AB la trung truc cua HE va AC la trung truc cua HF.Duong thang EF cat AB,AC lan luot tai M,N.Chung minh CM song song EH,BN song song FH

Mk cần gấp ạ Change into reported speech. 1. “My car was stolen a few weeks ago.”  I said......................................................................................... 2. “My boss arrived late last night”  He said.................................................................................... 3. “We have to go there now”  We say.................................................................................. 4. “I’ll go to my village next week”  She said.................................................................................. 5. “Can I drive your car”  I asked him.................................................................................. 6. “Do you want the job?”  They wanted to know if.................................................................. 7. “Are you willing to work on Saturdays?”  he asked me.................................................................................. 8. “How many children do you have?”  I asked her.................................................................................. 9. “Where are you going to visit tomorrow?”  Lan asked me.................................................................................. 10. He said “My father is a doctor here”  .................................................................................. 11.She said to me: “you can sit here” ……………………………………………………………………………………… 12.Nga said: “I am taking my test tomorrow” ……………………………………………………………………………………… 13.I said to her: “Jim is driving late today” ……………………………………………………………………………………… 14.He said: “I don’t want to eat anything now” ……………………………………………………………………………………… 15.Minh said to me: “I won’t be home this evening because I have to work late” ……………………………………………………………………………………… 16.Huong said to me: “you must do your homework everyday” …………………………………………………………………………………… 17.I said to Nam: “There isn’t any milk in this bottle” ……………………………………………………………………………………… 18.He said: “I’ll be here again tomorrow” ……………………………………………………………………………………… 19.We said to them: “your houses are very nice” ……………………………………………………………………………………… 20.She said to them: “He has lived here for five years” ……………………………………………………………………………………… 21.Tom said: “I’m going away for a few days and will phone you when I get back” ……………………………………………………………………………………… 22.Mai said to Minh: “I can not go to the cinema with you tomorrow” ……………………………………………………………………………………… 23.Ann said to me: “I’m very grateful to you for your helping me with the vietnamese lessons” ……………………………………………………………………………………… 24.He said: “I don’t need any help” ……………………………………………………………………………………… 25.Betty said to Bill: “I don’t like this film” ……………………………………………………………………………………… 26.Lan said: “I am coming back next week” ……………………………………………………………………………………… 27.She said: “I must wash my hands” ……………………………………………………………………………………… 28.Mother said: “I have something to show you, Tom” ……………………………………………………………………………………… 29.They said: “We have a lift but it doesn’t work” ………………………………………………………………………………………

Mọi ng giúpe với ạ, em đang cần gấp lắm!

Một đám đất hình thang có đường cao20,5m, đáy bé bằng 18,3m, đáy lớn bằng 22,5m. Giua đám đất ấy người ta đào một cái giếng hình tròn có bán kính 1,3m. Tính diện tích phần còn lại của đám đất ấy ?