Lượng nước trong hạt tươi là 20%. Có 200 kg hạt tươi sau khi phơi khô nhẹ đi 30 kg. Tính tỉ số phần trăm nước trong hạt đã phơi khô?

phân số 2021/1000 viết dưới dạng số thập phân là

Bài 1 tìm x a) ( 2x + 5 )² - ( x + 2 )² = 0 b)( x + 1 )( 7x + 2 )- 2x² - 4x - 2 = 0

Choose the best answer 1. There (is/are) no girls in this class. 2. There (is/are) no key for this door. 3. 80% of the students (has/have) voted. 4. Geography (is/are) fascinating. 5. Where (is/are) my gloves? 6. Each ticket (costs/cost) $5. 7. The boy with his dog (is/are) here. 8. John or Tom (is/are) bringing the car 9. His hair (is/are) turning gray 10. (Is/Are) there anybody at home? 11. Neither praise nor blame (seem/seems) to affect him 12. Three fourths of his fortune (was/were) devoted to scientific research. 13. Two-thirds of these books (is/are) novels. 14. The crowd (was/were) wild with excitement 15. Why (is/are) the police standing there? 16. So far everything ( has/have been ) all right 17. More men than women (is/are) left-handed. 18. Our team (is/are) going to win the game 19. None of my classmates (speak/speaks) Arabic. 20. Every student (is/are) tested twice a year. 21. Each of the items in the bill (is/are) correct 22. 10 years in prison (was/were) too long for him.

3x+√9x-3 √x+1 √x+2 ------------- - ------ + ------ x+√x-2 √x+2 1-√x Rút gọn giùm em với ạ.

dịch tiếng anh thành tiếng Việt , dịch nhanh nhất và chính xác tặng lun ctlhn

Use the prompts to write sentences. 1. We/ go/ skiing yesterday. 2. you/ watch/ the men’s basketball final/ TV/ last night? 3. I/ not play/ badminton/ last Sunday/ because/ I/ be/ ill. 4. Sue and her friends/ do/ yoga/ the gym/ now. 5. Last week/ we/ study/ how/ surf. It/ be/ very interesting. 6. He/ usually/ play/ football/ his friends/ Saturdays. 7. Where/ the children/ be/ yesterday morning? They/ be/ at the swimming pool. 8. His father/ teach/ him/ how/ play/ football/ a very young age.

Các hàm số sau là hàm số b1 không 1) y=3-2x+x^2 2) y=4\x+3-2\5 3) y=√3\2×(x+5) 4). Y=2x+5\3 5) y=15-3x-1\2

Khi cho 3,425g một kim loại hóa trị II tác dụng với nước dư thì thu được 0,56 lít khí (đktc) xác định tên kim loại

Part V. Read the passage and choose the correct answer A, B, C or D for each of the following questions. Write your answers on the answer sheet. A lot of children are picky eaters. For example, they don't like meat, they don’t want any vegetables, and they only want ice cream. Some people never change. Mary is a good example. She’s an adult now, but she’s still a picky eater. She says, “I only eat foods I like.” Mary loves fruit, and she eats some fruit every day, but she doesn’t eat any vegetables. “Don’t even show me lettuce or carrots!” she says. What does she like? “Pizza is my favorite food. I eat pizza at least five times a week. I have it with green peppers and onions, so I eat some vegetables!” What are her other favorite foods? She likes chocolate. She usually has some chocolate several times during the day. Does Mary plan to change her eating habits? “Not if I have a choice,” she says. “So don’t offer me any salad, OK?” 29. The best title of the passage is _________ A. Children's food. B. Picky eaters. C. Children's eating habits D. Children's favorite foods 30. According to the passage, Mary dislikes _________most. A. pizza B. vegetables C. fruit D. meat 31. Which of the following sentences is NOT correct? A. Mary only eats the food she likes. B. Mary doesn’t like vegetables. C. Mary plans to change her eating habits. D. Mary likes fruits, chocolate and pizza. 32. How does Mary feel about salad? A. She likes salad. B. She doesn't like salad. C. She loves salad. D. She thinks it's great. 33. Picky eaters are the people who _________ A. don't like meat B. don't want any vegetables C. only like ice cream D. only eat the foods they like