Cho đg tròn (O) ,hai dây AC và BD cắt nhau tại S sao cho ASB=50 độ ,sđAB=80 độ ,số đo cung CD bằng bao nhiêu

giải thích cho mình vì sao khi so sánh biểu thức M với √M thì so sánh M với 1??

2.3. Mức độ vận dụng. 1. You aren’t allowed smokingbecause you are too young to do it A B C D 2. Peter was too selfishfor helpinganyonethough he was very rich. A B C D 3. The memo was written to the members of the committee to remind them of bringing the A B C progress reports to the meeting. D 4. Do not hesitate to give me a ring should you need my help, but you had better not to do it at midnight A B C D 5. In our discussion on unemployment, we should also take into account the fact that many A B people are just unwilling for workingat all. C D 6. Your irresponsible attitude has caused that we gotinto trouble. A B C D 7. If you keep letting your son to drive so uneconomically, we will end up spending all our A B C money on petrol. D 8. Everyone ought to know the basic steps that follow in case ofan emergency. A B C D 9. It is believed that in the near future robots will be used to doing things such as cooking A B C D 10. The manager first talked about staffing policy, and then went on talking about the budget. A A B C D 11. What she likes is swimming in the sea and then to lieon the warm sand. . A B C D 12. She has just had an easy timeto take part in social activities. A B C D 13. Ienjoycalling“madam” A B C D 14. The roadto join two villages is very narrow. A B C D 15. She is the lastpersonhearing this information. A B C D

vẽ hình nữa nha.không vẽ hình=bc

Helppp cần rất gấp nên chỉ cần đáp án

Tìm tâm và bán kính đường tròn x2+y2+8x-4y-5=0

Vẽ anime/ chibi Ai hong có nhóm hong nhóm tui đang tuyển thành diên nè dô đi :3 Trưởng nhóm nà bn kêmm xinh gái lắm :33

cho x/2008=x/2009=x/2010.chứng minh rằng 4(x-y)(y-z)=(z-x)² Giúp mình vs ạ mình cần gấpp

Chọn một hóa chất nhận biết các dung dịch không màu sau: NH4NO3, MgSO4, C2H5OH, Na2CO3, CH3COOH, Al2(SO4)3và (NH4)2SO4

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