Bài 3 : Đốt m(gam) một mẫu kim loại Fe trong khí oxi, sau một thời gian thu được 32,8 gam rắn A gồm 4 chất. Hòa tan hết A trong HNO3 dư thì thu được 8,96 lít lít (đktc) hỗn hợp khí Z gồm 2 khí NO, NO2 có = 18. Giá trị của m

1. Which number is made up with 1 hundred, 4 tens and 3 ones? (A) 413 (B) 143 (C) 341 (D) 1043 (E) 134 2. A pyramid has 12 edges. What is the shape of the base? (A) a triangle (B) a square (C) a pentagon (D) a hexagon (E) an octagon 3. Ann has a cloth bag with 20 balls, numbered from 1 to 20, in it. She selects a ball from the bag. Which of the following events is the most likely? (A) She selects ball number 1. (B) She selects an odd-numbered ball. (C) She selects a ball with the digit 2 in the number. (D) She selects ball 9 or 10. (E) She selects ball number 20. 4. Jane is given a large block of chocolate which is made up of square pieces and is 6 pieces wide and 8 pieces long. .............................................................................................................................................................................................................................................................................. .. .. .. . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. .. . 6 8 Chocolate She eats all the outside pieces. What fraction of the block is left? (A) 1 4 (B) 1 3 (C) 1 2 (D) 2 3 (E) 3

.......................,,....,..

giải nhanh hộ mik nhé mik tick cho 5 sao

3x^2-22xy-4x+8y+7y^2+1 12x ^ 2 +5x−12y ^2 +12y−10xy−3

phân tích đa thức thành nhân tử 4x(x-y)+3(y-x)^2 mũ 2 nhaa

11. Some referees in the V-league lack _________ .(part) 12. Children who grow up in time of war are more likely to be _________ then others. (adjust) 13. Mai has a very sweet _________ smile. (child) 14. They fought _________ in the war. (hero) 15. The boy was violent and his parents found him _________. (manage) 16. I didn’t know who she was with a mask on. She was completely _________. (recognize) 17.The sun and the moon are often _________ in poetry. (person) 18. His latest _________ is a racehorse. (acquire) 19. This statue _________ the soldiers who died in the war. (memory) 20. What a terrible film! It’s really _________ in my view. (rate) 21. ‘Have you got any _________ about the corporation?’ (give) 22. Fishing is said to be the most popular _________ sport in the UK. (participant) 23. He examined the parcel _________, as he had no idea what I would be. (suspect) 24. The tourists were impressed by the _________ of the jewellery in the museum. (splendid) 25. Small children are very _________ in their behavior. They just copy what they see. (imitate) 26. He works for a _________ company for investment. (advise) 27. The _________ (maintain) of the good relationship between the 2 countries was brought up in the _________ (confer) 28. Barbara is very _________ about birds. She knows a lot about them. (knowledge) 29. It was _________ of you not to offer her a drink. (hospitable) 30. Don’t compare James with Peggy , the 2 are entirely _________. (similarity)

Người ta đào một cái ao hình vuông để nuooi ba ba trên mặt thửa đất hình vuông. Cạnh ao cách đều cạnh thửa đất là 3m. Chỗ đất còn lại đổ cát làm chỗ cho ba ba đẻ trứng và có diện tích là 324m2. Sau 3 năm, tính ra mỗi mét vuông mặt ao thu hoạch được 900 000 đồng tiền lãi. Tính số lãi thu được từ sau 3 nămkể 1 kỉ niệm khó quên về tình bạn

Mọi người giải thích giúp em câu này với. Tại sao tại vị trí x=+-2,5cm thì lò xo không bị biến dạng vậy ạ?

viết 1 đoạn văn 12 câu với chủ đề "trẻ em hôm nay thế giới ngày mai"