Cho a > 0, b > 0. Tìm giá trị lớn nhất của biểu thức: P = 2/3 . (a+b) . √(4 - a ²) . √(10 - b ²)

Bài 3: Cho tam giác ABC vuông tại A. Trên tia đối của tia AC lấy điểm D sao cho AC = AD. Trên tia đối của tia BA lấy điểm M bất kì. Chứng minh rằng: a) BA là tia phân giác của góc CBD. b) tam giác MBC= tam giác MBD

128=?x? ? và ? là hai số giống nhau

Hay ta lai cây phuong vi va tieng ve keu trong mua he

hãy trả lời câu hỏi sau bằng một đoạn văn nghị luận xã hội ngắn (khoảng 200 chữ) :Để cuộc sống trở nên nhẹ nhàng ?)

-136+(-25)-(-136)+125+(-125).29.(-8) Tính nhanh, đáp án bằng 29100

bài 1: a/ Viết các số sau thành tỉ số phần trăm: 2,5 ; 12; 2 b/ Viết các tỉ số phần trăm sau thành số thập phân: 34%; 45,8% ; 239% c/ Viết các tỉ số phần trăm sau thành phân số thập phân : 25% ; 3,6% ; 18,9% Bài 2: Một lớp học có 18 học sinh nam và 12 học sinh nữ. Hỏi số học sinh nữ chiếm bao nhiêu phần trăm số học sinh cả lớp?

Tìm các số nguyên x biết: a) 4x - 15 = -75 - x b) 72 - 3x = 5x + 8 c) -7|x+3| = -49 d) -8x + 12 = -5x - 33

Hay ta lai canh cay mai vang hoac cay dao vao dip tet den xuan ve

Ex1. Read and answer the questions: Hi, My name is Pike and this is my son. He learns in a big school in London. He goes to school from Monday to Friday and doesn’t go to school at the weekend. At school, he studies many things. He is very interested in math and Physics because they are his favorite subject. At recess, he often plays basketball and he plays it very well. He sometimes plays soccer after school. In his free time, he always listens to music and he learns to play the guitar. He hopes he will become an engineer in the future. 1. Where does Pike learn? ........................................................................................................................... 2. What subject does he like? ........................................................................................................................... 3. What does he do at recess? ............................................................................................................................ 4. What does he do in his free time? ............................................................................................................................ 5. Does Pike want to be an engineer or a singer? ............................................................................................................................ Ex2: Choose the best answer to complete the sentences: 6. We go to school at ( a quarter to seven/ seven to a quarter/ seven quarter/ a quarter seven to ) in the morning 7. The Bakers ( is having / are having / eating / is eating ) dinner at the moment 8. There ( isn't/ aren't/ is/ are) any milk 9. Let's ( go/ go to / going / is going ) the movies 10. ( How/How long/ How often / How old ) are you going to stay there ? For two weeks 11. Is this her ( erasers/ a book/ an eraser/ eraser ) ? 12. I do not go to school ( on / in / at for ) Sundays 13. Who is ( tall/ taller / tallest/ the tallest) person in your family? 14. There are four people ……… my family. ( on/ in/ at/ from ) 15. Is Mss Chi a teacher?- Yes, ……… is. ( she/ he/ I/ you ) Mr Mrs Miss= Mss 16. ………is that? – It’s a book. ( How/ Who/ What/ How old ) 17. How many ………. are there in your class? ( student/ a student/ students/ studentes ) 18. Hello, ………. name is Minh. I’m a student. ( my/ your/ his/ her ) 19. ………your book, please. ( Sit/ Close/ Stand/ Come ) 20. This is ………. eraser. (a/ the/ at/ an ) Ex3: Which one is pronounced differently? 21. A thank B . that C . brother D. these 22. A. orange B. grade C. timetable D. late 23. A. read B. teacher C. eat D. ahead 24.A. children B. ten C. pen D. twelve 25. A. ground B. should C. about D. mountain Ex4. Fill in the blank with a ,an, some or any: 26. There isn’t ………… milk in the bottle. 27. I want ………… apple. 28. I’d like …………… chicken and rice. 29. That is …………… onion. 30. Do you have ……….. meat. 31. Are there ………… eggs on the table? Ex5. Reorder the words to make sentences: 32. would / like / breakfast/ what / for /you ? ................................................................................................................................................. 33. Some / would /bread /like/ I/ milk/ some/ and ................................................................................................................................................. 34. weather/ in/ what/ the/ summer/ is/ like/ the?/ ................................................................................................................................................. 35. going/ the/ she/ to/ is/ citadel/ visit/ …………………………......................................................................................................... 36. don’t/ like/ I/ coffee. ................................................................................................................................................ 37. my/ is/ drink/ orange juice/ favorite ................................................................................................................................................. 38. play/ let’s/ volleyball ................................................................................................................................................ 39.skiing/ they/ go/ family/ with/ the/ in/ usually/ the/ winter/ …………………………………………................................................................................. ***Write the sentence using word cues: 40. Why/ he/ like/ monkey/? => …………………………………………………………………………………………..