Tập nghiệm của bất phương trình x^2+4x+4 >0 A.(2;+dương vô cùng) B.R C.R\{-2} D.R\{2} Giải giúp mk vs.

Hãy phân loại và gọi tên các oxit sau : HgO , SO2 , BaO , N2O5 , PbO , K2O , FeO , SiO2 , Ag2O , SO3.

câu 11''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''

Decide if each sentence is true or false and correct wrong sentences. Sentence (T)/(F) Correction 1. He is only sixteen, so he is not allowed to drive a car. 2. Maria tried to read a novel in French, and the book was too difficult for her to understand. 3. To get from Vancouver to Victoria, you can fly, or you can ride the ferry. 4. I bought a bottle of wine and we drank it together. 5. The waiter was not very nice, or the food was delicious. 6. Although he worked very hard, he still cannot earn enough money to support his family. 7. I wanted to give him some money after he helped me with the car although he absolutely refused to accept it. 8. Everyone is ready for the discussion in spite of him. 9. In spite of I was tired, I managed to finish the work. 10. Is her child a boy or a girl? 11. I forgot to bring the map, or I got lost. 12. He failed the examination because of he didn’t study hard enough. 13. Lien won the match although she was injured. 14. My new classmate is quite friendly and sociable. 15. I don’t like watching films on TV and I like watching them at the cinema.

Decide if each sentence is true or false and correct wrong sentences. Sentence (T)/(F) Correction 1. He is only sixteen, so he is not allowed to drive a car. 2. Maria tried to read a novel in French, and the book was too difficult for her to understand. 3. To get from Vancouver to Victoria, you can fly, or you can ride the ferry. 4. I bought a bottle of wine and we drank it together. 5. The waiter was not very nice, or the food was delicious. 6. Although he worked very hard, he still cannot earn enough money to support his family. 7. I wanted to give him some money after he helped me with the car although he absolutely refused to accept it. 8. Everyone is ready for the discussion in spite of him. 9. In spite of I was tired, I managed to finish the work. 10. Is her child a boy or a girl? 11. I forgot to bring the map, or I got lost. 12. He failed the examination because of he didn’t study hard enough. 13. Lien won the match although she was injured. 14. My new classmate is quite friendly and sociable. 15. I don’t like watching films on TV and I like watching them at the cinema.

có 54 con vừa gà vừa chó. tất cả có 154 chân. hỏi có bn con gà , bn con tó

⇔ nay la giau gi khi viet vao vo z mn

chọn một hoặc hai khổ thơ mà em tâm đắc nhất trong bài " Viếng Lăng Bác" rồi viết một văn bản ngắn nêu cảm nhận của em. Trong đó sử dụng 2 thành phần biệt lập và 2 phép liên kết đã học ( xác định và gạch chân).

Khi biểu diễn các số (-5) và (-3) trên trục số thì điểm (-3) ở bên trái điểm (-5)

Người ta muốn tải một công suất điện 4,5kW từ nhà máy thuỷ điện đến một khu dân cư cách nhà Máy 85km. Biết cứ 1km dây dẫn có điện trở 0,9 . a) Hiệu điện thế giữa hai đầu dây tải điện là 25 000V. Tính công suất hao phí vì toả nhiệt trên đường dây. b) Nếu cứ để hiệu điện thế hai đầu đoạn dây tải điện là 220V mà truyền đi thì công suất toả nhiệt trên đường dây là bao nhiêu ? giúp e với