b) Chứng minh rằng: Nếu a, b, c là các số khác 0 thoả mãn: ab+ac/2 = bc+ba/3= ca+cb/4 thì a/3 = b/5 = c/15

a. x + 6734 = 3478 + 5782 b. 2054 + x = 4725 - 279 c. x - 3254 = 237 x 145 d. 124 - x = 44658 : 54

đây là điều mà mik muốn nói với mn (VẼ ANIME VUI VẺ)

Write a paragraph to talk about advantages and disadvantages of taking online learning courses. (Write 50 – 60 words).

Há há Vừa bị xoá câu hỏi xong sướng gkee :)🙂 Vẽ anime vui, cười trong nỗi đau

a) Khử 14,4 g sắt ( II) oxit bằng khí hidro . Tính số gam sắt thu được b) Tính thể tích khí hidro ( đktc ) thu được khi cho lượng sắt trên tác dụng với dung dịch axit clohidric LÀM CÂU B THÔI CŨNG ĐC

? + ? -> KOH + ? Fe + O2 -> ? ? -> O2 + ? + ? CH4 + ? -> ? + H2O Al + ? -> ? H2

Vẽ bầu trời *Đẹp +có màu App cx được

The problem of homelessness is an international one. In the capital cities of the world, the (1) _______ of people begging on the streets is becoming increasingly (2) _______. But all over the world, homeless people are taking the future into their own (3) _______. By selling "street papers" they no longer need to beg for a (4) _______. The concept of the street paper is (5) _______. It is sold by homeless and ex-homeless people who buy it at a (6) _______ price of 30 p and sell it to the public for 70 p, keeping 40 p for themselves. If they have no money, then they can get the first ten copies on (7) _______ and pay for them later. Every paper seller receives training and is given a special (8) _______ badge. The paper itself (9) _______ articles of general and social interest, film and book (10) _______, cartoons and the (11) _______ celebrity interview. Advertising and sales (12) _______ most of the income, and all profits go (13) _______ into helping homeless people. The Big Issue is the street paper of the British homeless. It was set up in 1991 and (14) _______ then it has helped hundreds of people to get (15) _______ the streets and back into society. 1. A. sight B. vision C. look D. view 2. A. usual B. common C. rare D. routine 3. A. heads B. shoulders C. hands D. mouths 4. A. life B. living C. being D. pay 5. A. easy B. straight C. plain D .simple 6. A. stuck B. steady C. held D. fixed 7. A. credit B. cheque C. cash D. card 8. A. character B. personality C. manner D. identity 9. A. consists B. contains C. keeps D. gets 10. A. stories B. reviews C. opinions D. views 11. A. sometimes B. often C. occasional D. seldom 12. A. give B. provide C. show D. offer 13. A. back B. out C. through D. forward 14. A. from B. of C. for D. since 15. A. out B. away C. off D. up Giải thích hộ mik luôn nhá 😅

Complete the second sentence so that it has a similar meaning to the first sentence, using the word given. Do not change the word given. 91. He had to give the money back. obliged @ He …………………….……………………………………………….. give the money back. 92. I didn’t need any help to repair my bicycle. repaired @ I…………………….……………………………………………….. own. 93. Teachers from the British Council started this school. set @ This school …………………….……………………………… teachers from the British Council. 94. ‘I won’t be able to finish the assignment,’ she said. explained @ She …………………….……………………………………………….. be able to finish the assignment. 95. I thought I would get the job, but someone else got it instead. succeed @ I …………………….……………………………………………….. the job.