giải bài toán sau:Một người bán hàng,lần thứ nhất bán được 2/5 số hàng, lần thứ hai bán được 1/3 số hàng,lần thứ ba bán nốt 40kg hàng thì vừa hết hàng.Hỏi lúc trưa bán người đó có bao nhiêu ki-lô-gam hàng

Mn ơi giúp mk với mai lớp mk có người dựng giờ ?Tìm cảm của Lão Hạc đã đc kể như thế nào

một vật rơi tự do từ độ cao h=? lấy g=10m/s^2. biết trong giây cuối cùng vật rơi được 35m a) tính thời gian rơi b) độ cao h=?

3 mũ n+2 - 3 mũ n+1 =1458 2 mũ n-1 + 4.2 mũ n =9.2 mũ 5 3 mũ n+2 + 5.3 mũ n+1 =216 5 mũ n+1 - 5 mũ n -1 =125 mũ 4 . 2 mũ 3.3

●Read the text and write True(T) or false(F) This is Thuan. He is eleven years old. He is in grade 6. His family has four people: his parents, his sister and Thuan. They live in a house near the Red river. There are flowers and trees in front of the house. Behind his house, there is a big garden. In the neighbourhood, there is a school, a market, a bookstore, a drugstore and a movie theater. There is a river paddy and a lake near his house. 1. What is his name? How old is he? 2. Which grade is he in? 3. Is his garden big? 4. Is there a market in the neighbourhood? 5. What is there in the neighbourhood? is small ................................... 4. Her bedroom is next to the bathroom .......................... 5. There are four people in her family ...................... 6. Her hair is long and back ........................

Đồ thị sau đây là của hàm số nào?

Bài tập viết lại câu thì hiện tại hoàn thành và quá khứ đơn 32. We began eating when it started to rain. We have ______________________________________________ 33. I last had my hair cut when I left her. I haven’t ______________________________________________ 34. The last time she kissed me was 5 months ago. She hasn’t______________________________________________ 35. It is a long time since we last met. We haven’t______________________________________________ 36. When did you have it ? How long______________________________________________ 37. This is the first time I had such a delicious meal . I haven’t______________________________________________ 38. I haven’t seen him for 8 days. The last__________________________________

Trình bày phương pháp hóa học để nhận biết các không màu sau NaCl, NaOH, HCl, H2SO4

1. There were more people living in my hometown in 2006 than in 2016 -> There were not..... 2. He understands the speech more quickly than she does -> She....

Bài tập viết lại câu thì hiện tại hoàn thành và quá khứ đơn 27. When did you last telephone him? Hong long ______________________________________________ 28. We have never eaten this kind of food before. It’s the ______________________________________________ 29. This is the fìrst time I have seen this fìlm. I have never ______________________________________________ 30. This is the first time he went abroad. He hasn’t ______________________________________________ 31. She started driving 1 month ago. She has ______________________________________________ 32. We began eating when it started to rain. We have ______________________________________________ 33. I last had my hair cut when I left her. I haven’t ____________________________________