B= $\frac{1}{2.5}$+$\frac{1}{3.5}$+$\frac{1}{3.7}$+$\frac{1}{4.7}$+...+ $\frac{1}{190}$ Giúp với ạ

Nhanh gọn lẹ 5 sao cho anh em luôn

1) tính: a,-5 mũ 60 x 30 mũ 5 /15 mũ 5 x 5 mũ 61 b,(1/3) mũ 2 - (-12/17) mũ 0 +(-1/2) mũ 3 x 4 mũ 2 2) chứng minh : a,(7 mũ 6 +7 mũ 5 -7 mũ 4) chia hết cho 11 b,(10 mũ 9 + 10 mũ 8 + 10 mũ 7 ) chia hết cho 222

help meeee pls :<<<<<<<<<<<<<<<<<<<<<<<

Viết đoạn văn ngắn (khoảng 200 chữ) bàn về ý kiến được nêu trong đoạn trích ở phần Đọc hiểu: Chính những khó khăn thử thách sẽ góp phần nhào nặn bạn trở thành một phiên bản tốt hơn.

Cho 6,9 gam Natri vào 300 gam dung dịch CuSO4 4% . Kết thúc phản ứng thu được dung dịch A, kết tủa B và khí C. a. Viết các PTHH xảy ra . b. Tính thể tích khí C thoát ra ở ĐKTC. c. Tính khối lượng kết tủa B. d. Xác định nồng độ % các chất trong dd A?

Câu hỏi biếu điểm Rewrite sentences Do you want to travel by car(in)

Honq hĩu sao chữ em thích khoe xác thực wa mọi người ạ :3 Semi/anime nka :3 Hóng dân vẽ ò :> Tradi hay digi đều được, line + màu thì càng tốt (không có không sao). Anh gảnh vẽ cko em mụt bước inking đi :> (0 bắt buộc) Không phạm luật hoidap. Thanks ^^.

II. Join these simple sentences to make compound sentences. Use the words in brackets. Example: The taxi stopped at the station. Two men got out of it. (and) The taxi stopped at the station and two men got out of it. 1. I took the shoes back to the shop. I complained about them. (and) 2. Your mother phoned this morning. She didn’t leave a message. (but) 3. I can leave now. I can stay for another hour. (I can either … or) 4. Jim built his own house. He designed it himself. (Jim not only … but … as well) 5. I don’t know what happened to him. I don’t care. (I neither … nor) 6. You can give me some advice. Your colleague can. (Either you … or) 7. No one was in when we called. We left a message. (so) 8. The old lady was nervous. She wasn’t used to strangers calling late at night. (for) 9. The letter has been lost. The postman has delivered it to the wrong address. (or) 10.Jane was successful career woman. Her mother wanted her to be a housewife. (yet)

1. After Mrs. Helen had returned (A) to her house (B) from work (C), she had been cooking (D) dinner. 2. Johnny kicked (A) the ball high (B) in the air, and Becky catching (C) it when (D) it came down. 3. Mary has worn (A) her new blue(B) trouser only once (C) since she buys (D) it. 4. Last month Harry told (A) me that he got (B) very bored with his present job and is looking (C) for a new one (D). 5. Having (A) fed the chickens, Kim was sat (B) down to (C) her own (D) meal. 6. When I turned on my computer, I was shocked (A) to find (B) some junk mail, and (C) I delete (D) it all. 7. They are going to have to (A) leave soon (B) and so do (C) we (D). 8. The boss laughed when the secretary has told (A) him that she really (B) needed (C) a pay (D) rise. 9. The telephone rang several times (A) and then (B) stop (C) before I could (D) answer it. 10. Debbie, whose father (A) is an excellent tennis player(B), has been (C) playing tennis since (D) ten years. 11. I have seen (A) lots(B) of interesting (C) places when I went (D) on holiday last summer. 12. When my cat heard (A) a noise in the bushes, she stopped moving (B) and listen (C) intently (D). 13. I think (A) it’s time you change (B) your way of (C) living (D). 14. Roger felt the outside (A) of his pocket to make (B) sure his (C) wallet is still (D) there. 15. When I’m shopping (A) in the supermarket, I ran into (B) an old friend who I hadn’t met (C) for (D) five years. 16. The police (A) arrested the man while (B) he is having (C) dinner in (D) a restaurant. mình cần gấp ai nhanh thì mk sẽ vote 5 sao và ctlhn ( đáp án phải đúng ạ)