Cho tam giác ABC ; M là trung điểm của AB, N là trung điểm của AC. Trên tia đối của tia NB lấy điểm D sao cho ND = NB. Trên tia đối của tia MC lấy điểm E sao cho ME = MC. P là trung điểm của BC, Q là trung điểm của AD. Chứng minh rằng: a) AD = AE b) E, A, D thẳng hàng. c) Ba điểm P, N, Q thẳng hàng.

mik đang cần gấp giúp mik vs

Trên tia Ox lấy hai điểm A và B sao cho OA = 7cm ; OB = 3cm. a) Tính AB. b) Cũng trên Ox lấy điểm C sao cho OC = 5cm. Trong ba điểm A, B, C điểm nào nằm giữa hai điểm còn lại? c) Tính BC ; CA. d) Điểm C là trung điểm của đoạn thẳng nào? Vì sao?

Vì sao trước khi làm việc với tệp ta phải gắn tên tệp cho biến tệp và đóng tệp sau khi kết thúc làm việc với tệp?

Chia động từ trong ngoặc thành dạng đúng. 1. She tells me ............... (help) her with her homework. 2. No ................. (take) away. 3. Do not ................... (stand) next to me! 4. .......... (Shut) up! 5. Could you please ................ (bring) me a cup of coffee? 6. Will you ......................... (not/treat) me?

Giải các phương trình sau: a) (3-2x)(3x+1)=0 b) (x-3)(2x-1)(1-3x)=0 Giúp mình với các bạn ơi mình cảm ơn nhiều.

Mark the letter A, B,C or D on your answer sheet to indicate the correct answer to each of the following questions. Question 9. When my family goes camping, the most interesting thing is to ___________the tent. A: make up B: take up C: get up D: put up Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. A: decided B: looked C: rented D: prevented 24 Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. Question 16. He was so insubordinate that he lost his job within a week. A: obedient B: fresh C: disobedient D: Understanding Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions. A: crowded B: convenient C: noisy D: popular 22 Mark the letter A, B, C or D to indicate the most suitable response to complete each of the following exchanges. Question 13. Question 13. Peter is talking to Mary. Peter: “ Would you like to go to the movies?” Mary: “ ________________________”. A: You are welcome. B: That’s very kind of you C: Yes. I’d love to. D: Yes, I like. Mark the letter A, B,C or D on your answer sheet to indicate the correct answer to each of the following questions. Question 11. Yesterday evening I watched a ________ . It was so scary that I couldn’t sleep at night. A: thriller B: comedy C: news D: play 20 Mark the letter A, B,C or D on your answer sheet to indicate the correct answer to each of the following questions. Question 8. My father and I enjoy________ kites and _______ the sunset. A: flying/watch B: fly/watch C: flying/watching D: fly/watching Mark the letter A, B, C or D to indicate the most suitable response to complete each of the following exchanges. Question 14. Sam and John are talking about their plan for the weekend. Sam: “Children in my village often fly their kites in the fields” John: “_______________________________”. A: That’s awesome B: Exactly what I want C: How interesting you are D: It’s right of my streets 17 Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions Picture 8 A: A B: B C: C D: D Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. A: cloth B: close C: clock D: clog choose the correct sentence A, B, C or D. A: The starry sky at night in the countryside is clearer and fantastic than that in cities. B: The starry sky at night in the countryside is more clear and fantastic than that in cities. C: The starry sky at night in the countryside is more clearer and more fantastic than that in cities. D: The starry sky at night in the countryside is clearer and more fantastic than that in cities. 13 Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. Question 15. There are a number of drawbacks of living in the city. A: advantages B: benefits C: disadvantages D: difficulties Mark the letter A, B,C or D on your answer sheet to indicate the correct answer to each of the following questions. Question 10. Visiting ________ increases my knowledge about cultures in the past. A: hometown B: mausoleums C: cinemas D: museums Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions Picture 9 A: A B: B C: C D: D

Giải hộ mình, mình cho 5 sao ạ

Bài 2: Một người đi xe đạp từ A đến B, với vận tốc trung bình 16km/h. Lúc về người đó chỉ đi với vận tốc trung bình 12km/h, nên thời gian về nhiều hơn thời gian đi là 30 phút. Tính quãng đường AB ?giải giúp mk vs ạ:))))

phương thức biểu đật chính trong văn bản bài học đường đời đầu tiên là gị .vì sao giải mình câu vì sao thôi nhé còn ptbđ mn biết rồi thank bn trả lời