Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Cho nửa đường tròn tâm o đường kính AB. kẻ hai tiếp tuyến Ax By với nữa đường tròn. M là một điểm tùy ý trên nửa đường tròn (M khác A và B). Qua M kẻ tiếp tuyến thứ 3 lần lượt cắt Ax và By tại C và D. CMR góc MEO=góc MFO=90 độ

Giúp mình ạ, đội ơn mấy bạn íiiiiiiiii

PRACTICE EXERCISES 1. He’s not sure _______ the idea at the moment, but I’m sure we’ll win him over in the end. A. from B. about C. through D. over 2. She doesn’t need _______ a dress for the wedding party. A. to choose B. choose C. choosing D. chose 3. These facts may be familiar _______ you. A. with B. about C. into D. to 4. They reminded me _______ late. A. to not come B. not coming C. not to come D. to come not 5. The train is _______ arrive at Glasgow Central at 12:12. A. due to B. due about C. due through D. due from 6. We sought to integrate Amy _______ the everyday affairs of the company. A. inside B. above C. into D. from 7. Tet is also the time for children to receive _______ money wrapped in red envelopes. A. timely B. lucky C. propitious D. blessed 8. The plenitude of our natural resources has resulted in most people _______ them for granted for most of human history. A. making B. looking C. showing D. taking 9. Katie chose _______ away from work that day. A. stayed B. to stay C. staying D. being stay 10. Imagine that a housing team is doing a research _______ students. A. on B. into C. over D. of 11. They define themselves _______ nationality, ethnicity, location, history, language and gender. A. in B. about C. by D. above 12. We all _______ a family and it is our family that keeps us together through thick and thin. A. belong to B. belong of C. belong about D. belong on 13. They feel _______ with the salesperson’s services. A. satisfying B. satisfactory C. satisfaction D. satisfied 14. They _______ the final stage called cultural identity achievement. A. keep B. look C. help D. reach 15. About 800,000 children are exposed _______ poisons each year. A. to B. by C. as D. off 16. Although my best friend now lives in Da Nang, we still try to keep in touch _______ each other. A. for B. with C. on D. up to 17. Some people _______ a strong urge to keep their cultural identity, so they continue speaking their language. A. taste B. feel C. touch D. think 18. My boss’s absence enabled me _______ myself as a key figure in our department. A. to establish B. established C. establishing D. establishes 19. Mexico _______ its independence from Spain in 1821. A. collected B. expanded C. increased D. gained 20. You _______ a tendency to exasperate me with your stubbornness. A. do B. make C. have D. get 21. _______ conclusion, I would like to thank our guest speaker. A. Over B. In C. Upon D. Onto 22. We’re particularly proud _______ our company’s environmental record. A. of B. off C. through D. by 23. The children soon settled _______ and started their work. A. up B. down C. at D. along 24. Taking part in different activities of the festival, group members get together, have fun, and _______ their cultural image. A. promote B. help C. loose D. show 25. Neil Armstrong is famous _______ being the first man to walk on the Moon. A. from B. round C. for D. about 26. They _______ their lives for their country. A. sacrificed B. gave C. lost D. let 27. Let us pray _______ the victims of this terrible disaster. A. from B. over C. through D. for

Giúp với ạ cảm ơn ạ,bài tập hơi nhiều nhưng mỗi yếu 2 bài này mong đc giúp

e. F = 125 – 75x + 15x^2 - x^3 tại x = 5

Mọi người giúp em câu l bài 3 và câu c bài 4 với ạ! Em đang cần gấp ạ!

calli : ulatroi tone j cũng đc nha

ét hai tính trạng phân li độc lập về màu sắc hoa và chiều cao cây có: A quy định thân cao, a quy định thân thấp B quy định hoa đỏ, b quy định hoa trắng Phép lai tạo ra con đồng tính, xuất hiện duy nhất một kiểu hình là Aabb x aaBb.AAbb x aaBB.AaBb x aabb.AaBb x Aabb.

I am Minh. I live in a village by Mekong River. Every day, like most of my friends, I walk to school. It is three kilometres away. After class, I often help my mother to collect water from the river and feed the chickens. At the weekend, the villagers often gather at the community hall where there is a TV. The adults watch TV, but more often they talk about their farm work and exchange news. The children run around, playing games and shouting merrily. Laughter is heard everywhere. My father sometimes takes me to the market town nearby where he sells our home products like vegetables, fruits, eggs… He then buys me an ice cream and lets me take a ride on the electric train in the town square. I love those trips. On starry nights, our children lie on the grass, looking at the sky and daring each other to find the Milky Way. We dream of faraway places.