P= P =$3x^{3}$ +$4x^{2}$ -8x +1 Chứng minh: P= $x^{2}$ +x

Xác định lượng mưa nhiều nhất Xác định lượng mưa ít nhất Xác định nhiệt độ cao nhất Xác định nhiệt độ thấp nhât ( SGK địa lí 7, bài 53, trạm Ạ )

Cho đề văn: một nhà văn có nói: " sách là ngọn đèn sáng bất diệt của trí tuệ con người". Hãy giải thích nội dung câu nói đó Ko chép mạng nha mik cảm ơn

đường trong quả cóc là đường gì

Cho mình tham khảo bài vẽ của các bạn chủ đề trang trí đầu báo tường với ạ!!!!

Viết đoạn văn khoảng 1 trang giấy kiểm tra viết về giải thích vì sao phải đi khắp muôn nơi

Giải giúp mình với ạ! Mình cảm ơn.

tại sao S+6 trong H2SO4 đặc có tính oxi hóa mạnh hơn H+ trong H2SO4 loãng. Mai mình nộp rồi mọi người

xác định chiều dòng điện dòng điện chạy trong mạch khi đèn pin sáng Giúp mik vs mik cần gấp.

IV. Complete each sentence with the correct form of the verb in brackets 1. Did you enjoy (watch)……………….. the film? 2. He has decided (go)……………. to work in a school in a quite remote area. 3. He intends (say)…………… there for at least three years 4. We’ll need (call)……… him more often! 5. We should avoid (use)……………… too much short and in formal online communication. 6. We plan (have)……………... a picnic this Sunday. Would you like to join us? 7. They didn’t mind (work)………..………… late to complete the task 8. Ann plans (contact)…………….…….. the doctor early tomorrow morning. VII. Read the text about Alexander Graham Bell and do the tasks Alexander Graham Bell is widely known as the inventor of the first telephone. He was born on March 3rd, 1847 in Edinburgh, Scotland. When he was 23, Bell emigrated to Canada with his parents and the next year moved to the United States to teach deaf-mute children. With his colleague Thomas Watson , Bell worked very hard on the experimentation to invent devices such as the harmonic telegraph (used to send multiple messages over a single wire) and phonautograph (used to draw the shape of the sound waves. The first telephone communication was said to have happened between Bell and Watson in 1876 while Bell was at one end of the line, and Watson worked on the telephone in another room. The first transmitted words were, ‘Mr Watson, come here. I want to see you’ a. Decide if the statements are T or F 1. Alexander Graham Bell is Scottish. 2. He spent all his life in Canada. 3. He worked with the deaf when he moved to the USA. 4. He wanted to create a device that can transmit human voice. 5. He was able to succeed right from the first experiment. 6. He worked on his inventions all by himself. b. Answer the questions 1. What is Bell’s ‘harmonic telegraph’? ………………………………………………………………………………….…… 2. What is Bell’s ‘phonautograph’ ……………………………………………………………………..……………….. 3. When did the first communication happen and how did it happen? ……………………………………………………………………………………… SẼ VOTE 5SAO CHO CÂU TRẢ LỜI HAY VÀ NHANH NHẤT Ạ,CẨM ƠN MỌI NGƯỜI NHÌU Ạ