Tìm nghiệm của cac đa thưc a, 3x -12 b, bx(4x-5)

1 ô tô có chuyển động thẳng đều có vận tốc 84km/h và 1 tàu hỏa chuyển động với vận tốc 40km/h bt rằng tàu hỏa chuyển dộng phương ngược chiều với ô tô nếu chọn tàu hoả là mốc thì vận tốc của ô tô là........km/h

Ai giúp mik với ạ những bài được khoanh í ạ mik đang cần gấp

1. So sánh a) 2^600 và 3^400 b)21^45 và 27^5 . 7^16 d) 36^4 . 4^12 và 48^8 e) 2^90 và 5^36 Giúp em với ạ , em đang cần gấp cảm ơn ạ

Ta có thể chia vật sáng làm mấy loại ?

Mong các mod giúp đỡ cho 100g dd na2so3 5% vào 150g dd h2so4 10%. tính c% các chất trong dd thu được sau pứ

Ex: Correct the mistake 1. The bar chart and the line graph illusrates beer consumption and the number of traffic accidents in Someland from 2000 to 2005 . 2 Prices increased steadily in 1994 before fell sharply in the next 2 years. 3. Almost people prefer watching TV to playing sports. 4. Environmental pollution has had a large number of negatively effects on human being . 5. Hamburger's proportion is higher 12% than that of pizza. 6. The amount of unemployed people has been rising rapidly due to the development of high technology . 7. The 25-34 years old in the US enjoy playing basketball. 8.Mobile phones and Internet allow us to easily connect with people live in different parts of the world. 9. Although the support of rich countries is necessary but the poor nations should make their own efforts to get rid of poverty. 10. Because limiting the use of private car is one of the principal measures to reduce air pollution. 11. Nokia shared the highest percentage 42% in the chart. 12. Besides teaching academic subjects, teachers also teach students moral lessons such as diligence ,loyalty and honest. 13. It is a common knowledge that, advertisements appear anywhere and are unavoidable. 14. The young nowadays have advanced education and higher qualifications, that means they have more opportunities in their career. 15. Population grows at an alarming rate is causing pressing problems including unemployment, pollution and poverty. Giúp mình với ạ .

Rewrite using the word given without changing it. Use between TWO and FIVE words, incl. the word given. 1. You should finish your homework before you go out. OUGHT You ……………………………………………………………………………… your homework before you go out. 2. I'm afraid it's impossible for me to come to your party. ABLE I'm afraid I ……………………………………………………………………………… come to your party. 3. Perhaps the sun will come out later. MIGHT The sun ……………………………………………………………………………… out later. 4. We needn't get up early tomorrow. HAVE We ……………………………………………………………………………… up early tomorrow. 5. The children often used to go for a walk in the woods. WOULD The children ……………………………………………………………………………… for a walk in the woods. 6. I'm sure Phyllis is not happy about losing her job. BE Phyllis ……………………………………………………………………………… about losing her job. 7. Sonia was a really good dancer when she was younger. DANCE Sonia ……………………………………………………………………………… well when she was younger. 8. Don't miss the film tonight. SEE You ……………………………………………………………………………… the film tonight.

Chọn đáp đúng nhất và giải thích vì sao chọn? 1.Tác phẩm nào nói về số phận bất hạnh của người phụ nữ Việt Nam? A.Bánh Trôi Nước B.Vợ Nhặt C.Vợ Chồng A Phủ D.Chiếc Thuyền Ngoài Xa 2.Tác phẩm nào không có nguyên bản là chữ Nôm? A.Bánh Trôi Nước B.Truyện Kiều C.Tràng Giang D.Qua Đèo Ngang 3.Đâu không là bản tuyên ngôn? A.Nam Quốc Sơn Hà B.Bình Ngô Đại Cáo C.Tuyên Ngôn Độc Lập D.Đập Đá Ở Côn Lôn 4."Vợ Chồng A Phủ" là tác phẩm của ai? A.Kim Lân B.Tố Hữu C.Tô Hoài D.Huy Cận 5.Tác phẩm không thuộc tác phẩm dân gian? A.Tấm Cám B.Sơn Tinh Thủy Tinh C.Quả Thị D.Sông Hương

Exersice 1: Choose the correct answer: 1. Living in this small town is (moree peaceful/ peaceful more) than I expected. 2. Nowadays people are (more anxious/ anxious more) about pollution than before. 3. Today you look ( happier/ more happy) than usual. 4. This year I will move to a (bigger/ biggest) city. 5. This experience is (more exciting/ most exciting) than I expected. 6. Who is (more intelligent/ most intelligent) between two of them. 7. This song is (catcher/ more catchy) than that song. 8. The new sofa is (costlier/ more costly) than the old one 9. Our family will move to a (more comfortable/ more comfortable than) place next year. 10. I hope you will get (best/ better) the next time I see you. 11. James has (many/ more) books than Paul. 12. She is (more independent/ most independent) than the last time I saw her. 13. Today my sister (is more quiet/ quieter) than usual. 14.Jane is(more pretty/ prettier) than Ann. 15.The weather is (hotter/ hottest) than yesterday.