B1:Các cặp số nhau bằng nhau ko? Vì sao a.-4/12 và 1/-3; b.5/7 và 7/5; c.9/12 và -9/11; d. 1/2 và -3/6. Bài mẫu : a. ta có -4.<-3>=+12 12.1=12 do đó -4 . <-3>=12.1=12 nên -4/12=1/-3 Các bạn dựa bài mẫu làm tương tự giúp mình nha.thanks you very much

bài 2 làm như nào vậy giúp mình ạ

Ai giải giúp mk bài 10,11,12,13 này nhé.thank you👏👏👏

bạn nào biết làm b3 này giúp mình ạ

1. He last phoned me in august --> He hasn't 2. It's ages since i saw her --> I haven't 3. I have never been here before --> It is the first 4. She last wore that dress at her sister's wedding -->She hasn't 5. They haven't phoned us for a month --> It is 6. The last time i met Ba was in 2008 --> I haven't 7. I haven't seen my brother for a month --> I didn't 8. I last saw Nam two years ago --> I haven't 9. The last time she went out with him was o months ago --> It is 10. It's three years since I last saw Nam --> I haven't 11. The last time she visited me was five months ago --> She hasn't 12. I last wrote to my uncle in july -->I haven't 13. It's a long time since we became close friends --> We have 14. Minh last wrote to his pen pal five months ago --> Minh hasn't 15. He hasn't chatted with his classmates through the internet for ages --> It's ages 16. We haven't seen her since we left uniersity -->The last time 17. I haven't written to you for a month --> I last

mn giải giùm em ạ em cần gấp ạ em cảm ơn nhiều III. Verb form: 1.We suggest he _____________________________ the test again.(do) 2.They suggested _____________________________for a walk.(go) 3.I remember _____________________________ the gate .Why is it unlocked now ? (lock) 4.Why not _____________________________ another product?(choose) 5.The song _____________________________ for 30 years now.(sing) 6.If you heat water at 100o c, it _____________________________.(boil) 7.It’s necessary that she _____________________________Spanish.(study) 8.He insisted that Mr.Bean _____________________________betteer.(act) 9.She has three days there.She _____________________________ many places of interest.(visit) 10.You must know the area well.You _____________________________ here for 5 years.(live) 11.If you _____________________________out, you should bring along a raincoat.(go) 12.It is suggested that he _____________________________here now.(be) 13.This action helps _____________________________energy.(save) 14.If you go on _____________________________, you will be terribly fined.(litter) 15.We look forward to _____________________________ fairly.(treat) 16.I let my friend _____________________________ my bike yesterday.(borrow) III.Rewrite the following sentences without changing the meaning: 1.You need to attend the course. It’s __________________________________________________________ 2.You should reduce the volume at night. You should turn _______________________________________________ 3.I am on the tenth page of the letter I am writing. So far _______________________________________________________ 4.You are not allowed to turn on that machine. You must ____________________________________________________ 5.We got up late, so we missed the first period. Since ________________________________________________________ 6.They are so lazy that they failed the exam. They failed ___________________________________________________ 7.You should do exercise or you will have fat in your blood. If you don’t ___________________________________________________ 8.It would be better if you stop here.  I suggest _____________________________________________________

Ai giúp mk bài 70 với Nhanh lên mk cần ngay bây giờ rùi Ai nhanh nhất mk vote 5 sao Thanks

Trên đường thẳng xy lấy một điểm O. Vẽ tia Om sao cho xOm= 90 độ vẽ tia On nằm giữa hai tia Om và Oy. Tìm trên hình vẽ: a) Các cặp góc phụ nhau; b) Các cặp góc bù nhau

Câu 3: Viết một đoạn văn (không dưới 5 câu) chủ đề tự chọn, trong đó có sử dụng ít nhất một trạng ngữ . ( xác định và nêu công dụng việc dùng trạng ngữ ấy trong đoạn văn)

Số dư khi chia 17^3cho 45 là CHỈ CẦN ĐIỀN KẾT QUẢ THUI NHA KO CẦN GIẢI ĐÂU