Tính `9/2+9/4+9/8+9/16+9/32+9/64`. *Dạo này mod làm ăn kiểu gì -_-.

I.Fill in the gaps with the present simple, present continuous, past simple, present perfect, future simple or be going to. Charles Maxwell (1) … (work) in a bank in the centre of London. At the moment he (2) … (look) for a new house. He (3) … (live) with his parents all of his life but now he (4) … (want) to move because he (5) … (decide) to get married. So far, he (6) … (look) at ten house, but he (7) .. (not/like) any of them. He (8) … (see) another one later today. He thinks he (9) … (like) it because he (10) … (already/see) a photograph of it (11) … (be) beautiful. Good luck, Charles!

mọi người giúp em với ạ em cảm ơn

Giúp em với đi ạ em đang rất gấp

Giải thích giúp mình câu này với ạ

Giải giùm em câu 26!!!!!!!!!!!!

I.Correct the mistakes. 1. You can go out until you finish eating. 2. Dad, must I borrow the car, please? 3. I haven’t be able to write the letter yet. 4. He can’t run long distances when he was a boy. 5. You mustn’t wake up early tomorrow. It’s a holiday. 6. He drives a Porsche. He must be poor.

f(x)=ax+b Biết f(1)=7/2;f(-1)=-5/2 A,f(x)=3x+7/2 b,f(x)=3x+1/2 c,f(x)=2x+1/2 d.f(x)=x+1/2

1. I/wash/my/hair. => ..................................................................................................... 2. It/snow. => ...................................................................................................... 3. They/sit/on/the/bench. => ............................................................................................ 4. It/rain/very/hard. => .............................................................................................. 5. She/learn/English. => .................................................................................................. 6. He/listen/to/the/radio. => .................................................................................................. 7. We/smoke/in/the/class. => ............................................................................................ 8. I/read/a/newspaper. . => ............................................................................................ 9. You/watch/T.V? => ............................................................................................ 10. What/you/do? => ............................................................................................ 11. What/Sam/and/Anne/do? => ............................................................................................ 12. It/rain/? => ............................................................................................ 13. That/clock/work? => ............................................................................................ 14. You/write/a/letter. => ............................................................................................ 15. Why/you/run/? => ............................................................................................

bài 1: cho tam giác ABC vuông tại A (AB<AC), đường cao AH. Từ H kẻ HM vuông góc với AB (M thuộc AB) và HN vuông góc với AC (N thuộc AC) a, chứng minh : tam giác AHM~ tam giác ABH b, chứng minh: AH²=AN.AC bài 2 cho tam giác nhọn ABC. Trên cạnh AB lấy điểm D không trùng với A, B. Qua D kẻ đường thẳng song song với BC cắt AC ở E.Qua C kẻ đường thẳng song song với AB cắt DE tại F nối BF cắt AC tại H. chứng minh a, tam giác ABC~ tam giác CFE b, HE/ HC=EF/DF