Hàm số nào đồng biến trên tập xác định của chính nó? a. y=sinx b.y=cosx c.y=tanx d.y=cotx

2√9y-27 - 1/5 √25-75 -1/7 x √49y-147 = 20

Vẻ đẹp bức tranh mùa thu qua bài "Câu cá mùa thu" của Nguyễn Khuyến.

IV. Using the words given and other words, complete the second sentence so that it has a similar meaning to the first sentence. Do not change the word given. (use 2-5 words in total) When he was younger, he went to the cinema every week. (used) When he was younger, he………………………………..the cinema every week. I hadn’t tasted Chinese food before. (first) It was the…………………………………………….Chinese food. While we were in London, it never stopped raining. (continuously) It……………………………………………while we were in London. I worked at a restaurant in those days. (was) In those days, I…………………………………………at a restaurant. After walking for a mile, they realized that someone was missing. (had) They………………………..for a mile when they realized that someone was missing. That was the only science-fiction book he had read. (never) He……………………………………..a science-fiction book before. When Nicky finished studying, it was nearly 12 p.m. (by) Nicky……………………………………….12 p.m. I was washing my car when suddenly there was an explosion in the nearby factory. (something) I was washing my car when……………………………….in the nearby factory. When Mark was a student, he was in the habit of forgetting his book. (always) Mark……………………………………..his book when he was a student. Jake made a speech and then we left the ceremony. (until) We didn’t leave the ceremony……………………………………a speech. The plane is takes off in half an hour. (due) The plane……………………………………….in half an hour. Her baby will be born in October. (is) She………………………………………….a baby in October. He is to take his driving test tomorrow morning. (be) He……………………….his driving test tomorrow morning. Mrs. Taylor, do you want me to hand out the photocopies? (shall) Mrs. Taylor,……………………………………..the photocopies? We intended to visit the museum but we didn’t find the time. (were) We………………………………………the museum but we didn’t find the time. I’ll come with you whenever you go on holiday. (matter) I’ll come with you……………………………………..on holiday. I will have dinner ready by the time your parents arrive. (prepared) I…………………………………………by the time your parents arrive.

Một dd Y chứa các ion Zn2+, Fe3+, SO42+. Biết tằng dùng hết 350ml dd NaOH 2M thì làm kết tủa hết ion Zn2+ và Fe3+ trong 100ml dd Y, nếu đổ tiếp 200ml đ NaOH thì 1 kết tủa tan vừa tan hết, còn lại 1 kết tủa màu nâu đỏ. Tính Cm mỗi muối trong dd Y

Cho phương trình x+y+z-2019=2 √(x-19) +4 √(y-7) +6 √(z-1997) Tìm x,y,z

III. Put the verbs in brackets into the past simple, the past progressive, the past perfect simple or the past perfect progressive. When the children……..(arrive) home it was obvious that…….(play) in mud. Their clothes were covered with it. I will never forget it. It was the first time I……(ever, go) to a fancy dress party. Michael…….(wait) in the queue to buy a ticket for the train when he…….(hear) an announcement saying that there was going to be a delay. By 1995, Susan…….(lecture) at the academy for ten years. In my youth, I …….(travel) the world and I often……(sleep) under the stars. Roger……(meet) his wife in the early 70’s. she……(act) in the theatre then. The thieves…….(beak into) houses for two years before they were finally caught. I……(complete) my university degree by 1990.

Hãy kể lại câu chuyện tức nước vỡ bờ và chỉ ra cách liên kết đoạn văn của em

mn giúp e tìm phương pháp giải phương trình này vs ạ 8cos2xsin2xcos4x = √2

Em hãy viết bài văn với nhan đề: Mùa khai giảng - Mùa của những ước mơ