Cho tam giác ABC . Gọi H,G,O lần lượt là trực tâm , trọng tâm và giao điểm 3 đường tròn của 3 đường trung trực trong tam giác . CMR a )omn đồng dạng hab b )gom đồng dạng gha C )ohg thẳng hàng và gh=2og

Question 34: The demand was so great. They had to reprint the book immediately. A. They demanded that the book be reprinted immediately. B. So great was the demand that they had to reprint the book immediately. C. The book would be reprinted immediately since the demand was great. D. They demanded to reprint the book immediately. Question 35: He did not work hard. He failed the exam. A. Even though he failed the exam, he didn’t work hard. B. Unless he had worked hard, he would have failed the exam. C. If he had worked hard, he would have passed the exam. D. However hard he worked, he failed the exam.

Question 31: Much to my astonishment, I found his lecture on wildlife conservation extremely interesting. A. Contrary to my expectations, his lecture on wildlife conservation was the most fascinating of all. B. I was fascinated by what he said in his lecture on wildlife conservation though I hadn’t expected it to be. C. I hadn’t expected him to lecture on wildlife conservation, but he spoke well. D. It was at his lecture on wildlife conservation that I realized I needed to study it. Question 32: Although he was able to do the job, he wasn’t given the position. A. The position wasn’t given to him in spite of his ability to do the job. B. He was given neither the job nor the position. C. Because he couldn’t do the job, he wasn’t given the position. D. He got the position despite being unable to do the job. Question 33: It is certain that the new cuts will worry the staff. A. The new cuts certainly worry the staff. B. The new cuts will be certainly worry the staff. C. The new cuts are bound to worry the staff. D. The new cuts will be bound to worry the staff

giúp minh với ạ, vote 5*+ctlhn

5x-13√x+6=0 các bạn giúp mình cách tách với ạ mình có đáp án rồi nhưng vẫn chưa hiểu lắm các bạn giải thích giúp mình với ạ

digi giùm tô màu đẹp hihi, xóa 2 laafn vì quên hình

Giúp em làm bài 1 và bài 2 với Em cực gấp luôn ạ

*Thực hiện phép tính: a. A= (x-2)(x^4+2x^3+4x^2+8x+16) với x=3 b. B= (x+1)(x^7-x^6+x^5-x^4+x^3-x^2+x-1) với x=2 c. C= (x+1)(x^6-x^5+x^4-x^3+x^2-x+1) với x=2 d. D= 2x(10x^2-5x-2)-5x(4x^2-2x-1) với x=-5

Năm nay tôi 6 tuổi, em gái tôi bằng nửa tuổi tôi. Hỏi khi tôi 70 tuổi thì em gái tôi bao nhiêu tuổi?

https://img.hoidap247.com/picture/question/20200823/tini_1598174850550.jpg hộ mình với ạ cám ơn mọi người trước ạ mình cần cách làm nha