mn ơi giúp mk vs, trình bày rõ ràng nha!

Làm đúng công thức lớp 7 nha 1) 2x=3y và x+y=10 2) 3x=5y và x+y=40 3) 4x=3y và x-y=11 4) -2x=5y và x+y=30 5) 3x=4y và 2x+3y=34 6) 4x=5y và 3x-2y=35

KHÔNG GHI LẠI CÂU HỎI (9 câu: không làm phần 1) 1. We thing that playing table-tennis is very interesting because we can meet and make friends with interesting people. 2. My brother and I the same hobby. 3. I love ...................outdoors in my garden to plant flowers and vegetables. 4. My father likes ...................his bike in the park at the weekend. 5. Tom and Peter like water ...................and they go swimming, play water polo and surf together a lot. 6. My hobby is collecting ..................because I love reading whenever I have time. 7. Why don’t you ..................jogging? It can help you keep fit. 8. I really enjoy going round the shops in my town to ..................for rare and old teacups. 9. My parents have just bought me a new ..................of roller skates. 10. Very ..................people collect motorcycles because it costs a lot of money to buy them and get them repaired.

Câu 1: Dẫn hỗn hợp các chất: Na2O, ZnO, Fe2O3, PbO đi qua khí H2 dư, đun nóng. Chất rắn thu được sau phản ứng gồm: A. Na, ZnO, Fe, PbO. B. Na, ZnO, Fe, Pb. C.Na2O, Zn, Fe, Pb. D. Na2O, Zn, Fe2O3, Pb.

Vẽ mầm ko cảm xúc :)) Nl: mệt mỏi quá ....... Off 1 thời gian để nghỉ ngơi ..... Lúc onl trở lại mong là mn đã quên mik là ai :))) CẢM ƠN THỜI GIAN QUA ĐÃ BÊN CẠNH ME

KHÔNG GHI LẠI CÂU HỎI (10 câu) Supply the correct forms of the words in brackets. 1. My sister (practice) ...................the guitar twice a week. 2. Don’t worry. I (go) ...................fishing with you next Saturday morning, 3. They (give) ...................a party next week. 4. The members of the stamp collectors’ club (meet) ...................at the library next Friday. 5. We (live) ...................near Nam’s house, but we (not see) ...................him very often. 6. I (see) ...................a film this Sunday evening. ................... (you/ go) with me? 7. I enjoy (go, fish) ...................because it (be) ...................relaxing. 8. I enjoy (collect) ...................dolls and it becomes my pleasure. 9. We love (watch) ...................new films, and we (go) ...................to watch a new Hollywood film next weekend. 10. Our uncle (play) ...................badminton once a week.

Giải nhanh hộ em với em sẽ cho ctlhn

Cho CO đi qua hh (CuO, Al2O3) nung nóng đến pư hoàn toàn thu được 8,3 gam chất rắn. Tính kl các oxit trong hh đầu.

Nhà đường phong Khúc Thừa Dụ là tiết độ sứ vì A muốn công nhận độc lập của nước ta B muốn trả quyền đọc lập tự chủ cho nhân dân ta lịch sử 6

MY SUMMER VOLUNTEER My name is Rachael and I am eighteen years old. This summer I did some volunteer work. I volunteered in an orphanage with about 220 children. I worked with the twenty-five babies and the younger children. I loved working in the baby rooms of the orphanage. At first it was really hard to see so many babies at the same time. But after some time, I loved the babies like they were my own. I also look after older children. They were really nice. They all just wanted our attention and love. I became attached to another little girl. She was seven years old. The first day I met her, she seemed very sad, and didn't play with the other children. By the end of my time there she was laughing and smiling. During my time at the orphanage, I fed babies and played with them. At the end of my time there, all the children were so sad but I can't do nothing but leave. This experience changed my life! It was a summer that I didn't waste. 1.What did Rachael do in that summer? 2. How many children were there in the orphanage? 3. How many babies did Rachael take care of? 4. Did Rachael only look after babies? 5. How different was the seven-year old girl? 6. What did Rachael do to take care of the babies? 8. Does Rachael like that volunteer time? 7. How did the children feel when Rachael had to go?