Bài 7 Tìm tất cả các phân số mà tử và mẫu đều là các số tự nhiên khác 0 có một chữ số ,tử kém mẫu 3 đơn vị và có a,BC của các tử là 210 b,BC của các mẫu là 210 c,BC của cả tử và mẫu là 210 Làm hộ tiếp nhé hihi

Giúp em vs ạ em ko hiểu cách lm ạ

.Câu thơ “Lượm ơi, còn không?” được tách thành một khổ thơ riêng và có cấu tạo là một câu hỏi tu từ có ý nghĩa gì?

M.n giúp em bài 4 & bài 6 với ạ

1. She speaks English very ___________ I can't hear any thing. QUICK 2. These students behave ___________ to everyone. GOOD 3. Last night, I saw an _____________ film on TV. EXCITE 4. Most teenagers don't like ______________ music. TRADITION 5. Playing football in the street is very _____________ DANGER 6. When she was a child, she received a good ____________ educate 7. The room will look brighter if there is a ______________ on the wall. paint 8. Some of the children ______________ boys, play marbles when there is a break. main 9. There are about 200 ______________ in this company. employ 10. This lovely apartment has two bedrooms and it is _____________ furnish

Thu gọn biểu thức:1+2^3+2^6+...+2^300

chứng minh biểu thức luôn dương hay âm với mọi x ∈ R a, x^2-6x+10>0 b, x^2-4x+7>0 c, x^2-x+1>0 d, -x^2+4x-5<0 e, -x^2 -3x -4<0 g, -x^2 -8x+3<0 GIẢI GIÚP EM VS Ạ

Bày cho mik với,nhưng phải đúng rồi mik sẽ cho sao và cám ơn

Chọn thì thích hợp nhất để hoàn thành các câu sau: 28. The train ______ when I ______ at the station. A. already left / had arrived B. already had left / arrived C. left already / had arrived D. had already left / arrived 29. Everyone was asleep when the enemy _____________ A. had attacked B. attacked C. was attacking D. attacking 30. Don't make noise. My mother ________________with her friends. A. talked B. talks C. is talking D. was talking 31. She ______ the piano since she ______ ten years old. A. played / was B. has played / has been C. has played / was D. had played / was 32. Up to now, I _________________ a lot of information about her. A. learnt B. would learn C. learn D. have learnt 33. Mary ___________ in London for 15 years. A. lives B. was living C. is living D. has lived 34. We were disappointed that most guests ___________ when we arrived at the party. A. had left B. has left C. left D. leave 35. He never goes home before he ______ his work. A. finished B. has finished C. had finished D. finishing 36. Before cars ______, people ______ horses and bicycles. A. were discovered / had used B. has been discovered / have been using C. is discovered / using D. discovering / used

136.23+136.17- 40.36. 66.25+5.66+66.14+33.66