5. Cho cấp số cộng (u)n có u3 + u13 = 80 . Tổng 15 số hạng đầu tiên của cấp số cộng đó bằng A. 600. B. 630. C. 800. D. 570 Gấp ạ!!1

20000000+20000000x+x(20000000+20000000x)=24200000

Ahmed Malik (0) ...sell... (sell) newspapers and sweets from his shop in north London. He (1) ..................................... (have) the shop for thirty years. His wife (2) ..................................... (work) in the shop with him and they (3) ..................................... (employ) two assistants. In 2005, they (4) ..................................... (buy) another shop in another part of London and their son now (5) ..................................... (manage) that for them. Emily Saunders is the head of English in a large secondary school. ‘I (6) ..................................... (come) to this school ten years ago as a teacher,’ she told us. ‘Since last September, I (7) ..................................... (be) head of the English department. I (8) ..................................... (not teach) as many classes as I used to, but I have other responsibilities. It’s a very good school and I’m very happy here.’ David O’Brien is a driver for the Post Office. ‘I (9) ..................................... (collect) mail from post offices in my van. I (10) ..................................... (work) for the Post Office for twenty-three years. I was a postman until 1990 and then I (11) ..................................... (get) my own van. I (12) ..................................... (enjoy) the job more since I became a driver. It’s more responsible and you don’t get wet!’

Hấp thụ 3,36 lít khí CO2 (đktc) vào dung dịch Ca(OH)2 dư thu được m gam kết tủa trắng. Giá trị của m là bao nhiêu

40% số tiền mừng tuổi của Linh bằng 50% số tiền mừng tuổi của Ly. Nếu Ly có 2 triệu tiền mừng tuổi thì tổng số tiền mừng tuổi của hai bạn là?

mik đg cần rất gấp mong mn giúp

Giúp mình bài này với mọi người ơi🥺🥺 Mình còn 10 điểm thôi mọi người thông cảm nha🥺🥺

viết cho mình calli chữ '' Love''

Ahmed Malik (0) ...sell... (sell) newspapers and sweets from his shop in north London. He (1) ..................................... (have) the shop for thirty years. His wife (2) ..................................... (work) in the shop with him and they (3) ..................................... (employ) two assistants. In 2005, they (4) ..................................... (buy) another shop in another part of London and their son now (5) ..................................... (manage) that for them. Emily Saunders is the head of English in a large secondary school. ‘I (6) ..................................... (come) to this school ten years ago as a teacher,’ she told us. ‘Since last September, I (7) ..................................... (be) head of the English department. I (8) ..................................... (not teach) as many classes as I used to, but I have other responsibilities. It’s a very good school and I’m very happy here.’ David O’Brien is a driver for the Post Office. ‘I (9) ..................................... (collect) mail from post offices in my van. I (10) ..................................... (work) for the Post Office for twenty-three years. I was a postman until 1990 and then I (11) ..................................... (get) my own van. I (12) ..................................... (enjoy) the job more since I became a driver. It’s more responsible and you don’t get wet!’

Các bạn giải giúp mik nhé, mik cần gấp lắm