Cho tam giác ABC Có A(1;-2) B(2;1) C(-4;3) a)chứng minh tam giác ABC vuông taị B c) Tính chu vi tam giác ABC mọi người giải thích cách làm dùm em ạ

VẼ ANIME GÁI XK (KG ĐÚNG TIÊU ĐỀ SẼ BỊ BC)[OK VÀ KG NS NHIỀU]{10₫}

1. Paul .......... in God since he was a child. A. believed B. has believed C. has been believed D. have been believing 2. Why are your hands so dirty? -I ............ my bike. A. repaired B. have repaired C. have been repair D. has been reparing 3. We ...... around Scotland for 8 days. A. traveled B. have traveled C. have travelling D. has been travelling 4. Sandy ......... dinner four times this week. A. cooks B. has cooked C. is cooking D. have cooked 5. We ...... our holiday yet. A. have not planned B. has not planned C. did not plan D. will not plan 6. My neighbor............. that house for 2 years. A. has built B. built C. is building D. have build 7. I .................... for you for a long time. A. has waited B. have waited C. am waiting D. was waiting 8. Since he (leave)............. here no one (see) ..................... him. A. has left/saw B. had left/saw C. left/has seen D. left/have seen 9. I .................... such a big fire before. A. have never seen B. never see C. had never seen D. never saw 10. We ...................... Dorothy since last Saturday. A. don’t see B. haven’t seen C. have seen D. didn’t see 11. As soon as you ...................... all your homework, you will be allowed to go out. A. are doing B. had done C. did D. have done 12. There ................... a big increase in the market for mobile phones recently. A. has had B. was C. has been D. is 13.Kathy …………… for three different companies since graduating two years ago. A.has worked B.have worked C.have been worked D.worked 14.The team ………….. numerous setbacks so far. A.experienced B.have experience C.has experienced D.is experiencing 15.They ……………….. at the airport yet. A. haven’t arrived B. haven’t already arrived C. hasn’t yet arrived D.didn’t arrive 16……………… you …………….. abroad this year? A.Has - been B.Has - gone C.Have - be D.Have - been 17. I ………….. three books by the same author since last month. A.has read B.have read C.read D.red 18.My sisters ………………….. Ha Long Bay before. A.have visited never B.have never visited C.has never visited D.has visited never 19.She …………………….. 10 famous novels for ages. A.has been writing B.have been writing C.has been written D.has written 20.My grandparents still live in Korea so I ……………… there many times since they lived in Germany. A.has flied B.flied C.had flied D.have flied

hộ 2 bài nay tuy nhiên bài 2 ý sẽ vt từ bài trên ý là vt câu văn có phép so sánh đó thành 1 đoạn văn, phân tích có đủ yêu cầu bài 2 nha cấm chép mạng, ai chép mạng mk spam

làm nhanh nào mik đang cần vote 5 sao luôn làm tất cả nhé

Hộ mình với mình vote 5 sao nhé

Cho đường thẳng ∆: 2x - y - 1 = 0 và điểm M (1;2). a, Viết phương trình đường thẳng (∆') đi qua M và vuông góc với ∆. Tìm tọa độ hình chiếu H của M trên ∆. b, Tìm điểm M' đối xứng với M qua ∆.

Tìm một số, biết 0,24 lần của số đó bằng 63/100

Viết 1 cậu ghép có sử dụng cặp quan hệ từ tăng tiến

Tìm ra lỗi sai trong mỗi câu sau và sửa: 1. Mr. Minh rides his bike to work at the moment. 2.There is not any oranges, but there are some bananas. 3. How many exercises does Lien have everyday. 4. Would you like have a cup of coffee, please. 5. There are some orange juice and some milk to drink. 6. Could you please to give me this book. 7. Lan have English on Monday.