Tính nhanh 90 - 90 x 100 700 : 100 x 100

Simply Entertainment? Many youngsters these days easily devote more time to the box than they to any (1)______________ form of entertainment. Each year children read less and less and watch television more and more. In fact, a typical child sits through an average of about four hours of TV viewing a day. They spend more time on this form of entertainment (2)______________ they spend talking to parents, playing with friends, attending school or reading books. According to a recent study, sixty-two percent of television programmes contain scenes of violence. It would be logical then to assume that watching a steady flow of violent images on screen cannot (3)______________ seen simply as entertainment. The bright colors, quick movements and sudden flashes will always capture a child’s attention and there are certainly very (4)______________ children who find television totally uninteresting. If we listen to the experts, it seems that viewing large amounts of TV violence does not necessarily cause a child to act in a violent (5)______________, but can lead to the view that violence (6)_____________ acceptable in everyday life, as well as possibly creating a fear of being attacked on the streets. With governments finally (7)______________ measures to improve the quality of children’s TV, parents must now become aware that (8)______________ many hours of viewing can have serious effects (9)______________ a child’s behavior and attitude. Obviously, turning off the set (10)______________ be the best solution in the end. LÀM XONG DỊCH GIÙM MIK NHA ĐIỀN TỪ

Một bể nước Hình hộp chữ nhật như hình vẽ a) Tính thể tích của bể b) Hiện nay bể chứa 8550 lít nước. Hỏi chiều cao mức nước trong bể bằng bn phần trăm chiều cao của bể? c) Có 3 vòi nước chảy vào bể. Vòi thứ nhất mỗi giờ chảy được 810lít nước. Vòi thứ hai mỗi giờ chảy được 830lít nước, vòi thứ ba mỗi giờ chảy được 760lít nước và nếu cho cả ba vòi cùng chảy thì sau bao lâu bể sẽ đầy?( Nếu lúc đầu bể cạn)

Câu 56.Cho tam giác MNK cân tại K, các đường trung tuyến MD và NE. Chứng minh rằng MEDN là hình thang cân. Hộ

nhanh đc ko tối phải nộp cho cô

Giải thích và chọn giúp mình vs ạ

-4/11+5/6+7/11-5/6=? ai giup dc ko

Câu 58. Cho tam giác ABC. Gọi M, N, P theo thứ tự là trung điểm của các cạnh AB, AC, BC. Tính chu vi của tam giác MNP, biết rằng AB = 8cm, AC = 10cm, BC 12cm. Hộ

làm hộ em đi IV. Put these sentences into the reported speech. 1. He said to her, “You are my friend.” 2. Johnny said to his mother, “I don’t know how to do this exercise.” 3. “Don’t come back before one o’clock”, advised my brother. 4. “Cook it in butter”, Mrs Brown said to her daughter. 5. The pupils said “Teacher, give us better marks, please.” 6. My friend said, “Are you going to leave tomorrow?” 7. “Have you done your homework?”, said my mother. 8. I asked Bill,” What time did you go to bed last night?” 9. Paul said, “I must go home now.” 10. “There is an accident”, said the policeman. 11. “We are waiting for the school bus”, said the children. 12. “Must you go now?” said Mr Brown. 13. “Are you going to visit your aunt tomorrow?” asked Tom. 14. “Listen to me and don’t make a noise,” said the teacher to his students. 15. “Tin tired of eating fish”, said Mary to Helen. 16. “The sun always rises in the east,” said Peter. 17. “I didn’t steal your fur coat yesterday,” said Samny to Jean. 18. “You must do your homework everyday”, said Miss Lan to us. 19. “Will we read the story?”, Bill asked his teacher. 20. “I don’t know where Alice is,” said Vicky. 21. Mary asked me “Can you tell me why you are so sad?” 22. “Will you please find out when he last wrote to me?” Jane said to her friend. 23. “You must decide what you want to do”, she said to her daughter.

Câu 24. Trộn lẫn 50 gam dung dịch NaOH 10% với 450 gam dung dịch NaOH 25 %. a) Tính nồng độ sau khi trộn. b) Tính thể tích dung dịch sau khi trộn biết khối lượng riêng của dung dịch này là 1,05. Mong mọi người giúp đỡ