Tìm được bao nhiêu các bộ số nguyên (a;b;c;d) thỏa mãn đồng thời abcd−a=1357;abcd−b=357;abcd−c=57;abcd−d=7? A.0 giá trị B.1giá trị C.3 giá trị D.2 giá trị

Khối lượng công việc tăng 50% nhưng Năng suất lao động tăng 20% . Số lượng công việc tăng bao nhiêu % ? Lẹ đi ạ

Tuyển thành viên trên 500 điểm Vẽ lá cờ phát xít Ý

đổi : a ) 0,2 m3 =..... dm3 =..... lít =..... ml b ) 0,5kg =.... héctogam =.... lạng =.... gam c ) 0,0254m =.... cm =.... inh( inch ) =.... mm

Tìm lỗi sai và sửa lại cho đúng: 1.I gets up at six……………. 2.After breakfast, I leaves my house at half past six……………….. 3.Our classes start at one p.m and ends at half past five p.m……………….. 4.Mai lives at the country………. 5.Phuong and Mai has English on Monday and Tuesday………. 6.There are a lake behind my house……. 7.Nam goes to school on bike………. 8.Mai’s father work in a factory……….. 9.There is a bookstore next my house……. 10.Lan and I am going to school……… 11.The sign says:”Stop” so you can go………………… 12.Minh are doing his homework…………. 13.There is a intersection ahead and you must go fast……………….. 14.David and I am playing video games………………. 15.The sign says:”No parking” so you can park here…………………. 16.My classmates is going to the movie theater now……………….. 17.Hoa can’t ride a bike so she mustn’t go to school by bus……………… 18.I are crossing the road…………………… 19.The sign says:”No turn left” so you can go to the left……………….. 20.The Browns is travelling to Hanoi by plane……………… 21.The sign says:” No right turn” so you can turn right………………….. 22.There are a hotel and a restaurant on the right of the movie theater…………. 23.My house is between those four houses…………….. 24.My teacher are going to motorbike…………………. 25.The sign says :”Go ahead” so you can’t go straight ahead………………….. 26.I is living at Hoang Van Thu street………….. 27.Hoa and Mai is on class 7A………………….. 28.My brother often doing his homework in the evening…………….. 29.I has dinner at half past six………………. 30.Chi lives on 78 Dinh Tien Hoang Street…………………. 31.A chicken is my favorite drink…………… 32.There are fish and vegetables in our dinner………….. 33.Is there any apples for their lunch?………………. 34.Lan is thisty so she ‘d likes some orange juice…………………. 35.There aren’t some apples on the table………………… 36.Phuong and Mai likes fish and meat……………. 37.There isn’t any bananas on the plate………………. 38.Hoa favorite food is a lemonade…………… 39.Huong and Dung’s favorite drink are iced tea and milk………………… 40.We need a kilo rice……………… 41.I wants a can peas………………. 42.Hoa needs two bar of soaps………………… 43.How many beef do you want?…………………. 44.Lan has much chocolates……………… 45.I’d like half dozen eggs……………………….. 46.How many is a tube of toothpaste?……………….. 47.This you are…………….. 48.Mr Ba is a weightlifter so he is very weak……………… 49.I feel hungry so I’d like a cup of tea…………….. 50 How much bananas does you wants?…………………. 51.I need half a kilo meat……………….. 52.I am going play badminton……………. 53.Lan and houng is going visit Dalat……………….. 54.I am going to stay to the Huu Nghi Hotel…………………… 55.Hoa are going to watch a tennis match in television…………………… 56.Mai want to travel to HCM City this summer vacation……………………… 57.David is going to stay on Vietnam two weeks…………………… 58.How much does he want to stay in HaLongBay?……………….. 59.What are you going to visit, the museum or the pagoda?……………….. 60.Who are you going to visit the Literature Temple?……………………

Tính nhanh : -13×(57-34)+57×(13-45)

1. Many European film........ have gone to Hollywood to make film (direct) 2. My father worked in United States When I was young ---> My father used 3. He is scared of ghost. he still wants to see that film. (although) 4.The popcorn is seliing well, although its price is high. (in spite of)

Tìm các số tự nhiên x,y biết y/2 -9/x =1/8

Cho tổng 1+2+3+4+...+10. Xoá hai số bất kì, thay bằng hiệu của chúng. Cứ tiếp tục làm như vậy nhiều lần. Có khi nào kết quả nhận đc bằng -1, bằng -1, bằng 0 được ko?

Cho tam giác ABC cân tại A. Trên tia đối của tia BA lấy điểm D, trên tia đối của tia CA lấy điểm E sao cho BD = CE. Vẽ DH và EK cùng vuông góc với đường thẳng BC. a) Chứng minh HB = CK b) AHB = AKC c) HK // DE d) Tam giác AHE = Tam giác AKD e) Gọi I là giao điểm của DK và EH. Chứng minh AI vuông góc DE. vẽ hình nữa Giúp tui zới