Mn oi chi e lam nhung bai nay vs a E se vote cho mn

Tìm 2 số biết tổng là 4020 và giữa chúng có 5 số chẵn

B1 Finish these sentence by adding a tag question with the correct form of the verb and the subject pronoun: 1. Your sister is collecting stickers, .......? 2. Someone often watches tv in the afternoon,....? 3. Your children have cleaned your bike,.......? 4. John and Max like Maths, ....? 5. Peter played handball yesterday, ....? 6. Your teachers are going home from school, .....? 7. Mrs Mary did her homework last Monday, .....? 8. Her father could have bought a new car,.....? 9. Mr Kevin will come tonight, .....? 10. I'm clever,...? 11. He's not coming, ...? 12. I'm not late, ......? 13. The bank lent him the money,......? 14. Your brother shouldn't do that,.....? 15. No one takes sugar in coffee, ......? 16. She looks tired, .....? 17. There is a cinema near the station, ....? 18. He arrived late, ....? 19. Nobody has arrived yet,......? 20. It's time to go, ....? 21. I'm right, ......? 22. Somebody has seen it before, ....? 23. Everybody will be there,....? 24. No one would do that, .....? 25. Something looks news there, .....? 26. She has had too much to do lately, ....?

Tổng hiệu sau là số nguyên tố hay hợp số: a, 3.4.5+6.7 b, 5.7.9.11-2.3.4.7 c, 3.5.7+11.13.17 d, 16354+67541

Mình chỉ còn 30 điểm, các bạn thông cảm :((

Cho các số hữu tỉ z= $\frac{m}{n}$ y=$\frac{c}{d}$ x= $\frac{a}{b}$ biết ad-bc=1 cn-dm =1 và b,d,n >0 So sánh y với t= $\frac{a+m}{b+n}$ ( b+n khác 0)

tính giá trị E=x^8-2007^7+2006^6-2006^5+...+2006^2-2000x+2000 tại x= 199

Bài 1 Tìm x các bạn làm đúng nhất giúp mình nhé

hòa tan hoàn toàn 28,4g P2O5 vào 121,6g nước. tính a) mH3PO4 tạo thành b)tính C% dd thu được sau PƯ

x^4+x^3-4x^2+x+1 (phân tích đa thức)