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Tìm x1, x2 theo m $\left \{ {{x1+x2=-\frac{m-2}{2}} \atop {2x1-x2=0}} \right.$ thay x1,x2 vừa tìm đc vào pt : x1.x2=-$\frac{m}{2}$ => Tìm m

If Joe doesn't changes his ways, he will end up in prison ==>Unless.......

help nhanh Viết 1 đoạn văn tiếng anh về ảnh hưởng của dịch covid 19 đến học sinh

Are there intelligent beings on the planets in our solar system? Most scientists do not think so. If there are, the only likely place is Mars. It is fun to imagine our kind of humans on other worlds, but they would probably look so different we might not recognize them as people at all. Living things have a wonderful way of adapting themselves to conditions around in order to stay alive. Plants grow in the Arctic. Some simple animals can survive being boiled or frozen. Creatures live in the blackest deeps of the sea under thousands of tons of pressure. We cannot really state that our kind of air is the only kind living things could breathe or that they must have water or certain climate. Creatures that breathed other gases or lived in other temperatures, however, would not look like us. Are there people anywhere else in the universe? Maybe there are. In our own galaxy, there are billions of stars. Some must have planets with conditions like those on earth. Somewhere in space, there could be other thinking beings. If their planets are older, they may know more than we do. They may be a traveling in space. Read and decide whether the following statements are true (T) or false (F). Statement T F 1. Most scientists think that there are intelligent beings on other planets in our solar system. 2. Intelligent beings on other planets are similar to human. 3. Plants in the Arctic can survive being boiled or frozen. 4. Living things can breathe other gases or live-in other temperatures, and certainly look like us 5. Intelligent beings on other planets may be already traveling in space.

Dựa vào cấu tạo và hình thức sinh sản của nấm men hãy giải thích vì sao tế bào nấm men được xem là tế bào điển hình cho nhóm sinh vật có nhân thật

13. Nobody swept this street yesterday.  This street 14. Somebody has already told him the whole truth.  He 15. The police found two children in the forest, didn’t they?  Two children 16. A thief had stolen her car before you arrived.  Her car 17. They used to start these engines by hands.  These engines 18. No one has seen Peter since the day of the party.  Peter 19. The manager has the typist type the letter.  The manager has 20. A young man sent those letters for me.  I had 21. How often do the mechanics service your car?  How often do you have

phương trình x^2-(2m-1)x+m+1=0 có 2 nghiệm phân biệt thỏa mãn x1>x2>0 khi nào?

bán kính bánh xe đạp bạn Hùng là 32,5cm .bạn Hùng đi xe đạp đến trg bánh chiếc xe quay đúng 200 vòng ,hỏi khoảng cách từ nhà bn Hùng đến trg bao nhiếu mét

Hãy viết 1 đoạn văn tiếng anh về ảnh hưởng của dịch covid 19 đến học sinh, nhanh lên mn ưi, pls !!!