Cho ABC có AC > AB . Trên AC lấy điểm E sao cho CE = AB . Gọi O là 1 điểm sao cho OA = OC , OB = OE .C/m : a) AOB = COE b) So sánh các góc OAB và góc OCA

`a) A = (4x−1) (3x+1)− 5x (x−3) − (x−4) (x−3)` giúp mk mk cần gấp lắm ạ tvm ít đỉm lắm

12. (5,5 điểm): Viết bài văn biểu cảm (có sử dụng yếu tố miêu tả, tự sự) theo một trong hai chủ đề sau: Một kỉ niệm tuổi thơ. Tình bạn tuổi học trò

Làm giúp mình câu 6 mơn trc nha

Read and complete the sentence with available words. flu cold fever doctor 1. A person who has been trained in medical sience, whose job is to treat people and who are ill/sick or injured. _________ 2. A medical condition in which a person has a temperture that higher than nomal. _________ 3. An infectious disease like a very bad cold, that cause fever, pains and weakness. __________ 4. Having a temperture lower than the human body. __________ Giúp mình đi, mình hứa sẽ vote, cảm ơn, và chọn ctlhn cho bài làm tốt

I.Talk to your friends about your school. Suggestion: 1. What is the name of your school? 2. Where is the school? 3. How many students does the school have? 4. What do students do at school? 5. What is great/interesting/fun about your school? 6. What is your school day like? Các bạn viết cho mình về trường THCS Nam Từ Liêm- Hà Nội nha Nhớ dịch sang TV cho mình

Vẽ anime mèo .........................

Câu 4: Cho 2 tia Oy, Oz nằm trên nửa mặt phẳng có bờ là tia Ox sao cho góc xOy=75 độ, xOz=25 độ a) Trong 3 tia Ox, Oy, Oz tia nào nằm giữa 2 tia còn lại? b) Tính góc yOz c) Gọi tia Om là tia phân giác của góc yOz. Tính góc xOm Lưu ý: Có vẽ hình

A planet is a body in space that revolves around a star. There are nine planets in our solar system, and these nine planets travel around the sun. The names of the planets are Mercury, Venus, Earth, Jupiter, Saturn, Uranus, Neptune, and Pluto. Planets travel in orbits around their stars . All of the planets of the solar system revolve in elliptical orbits. In other words, their orbits are like large, flat circles. The time that it takes a planet to make one revolution around the sun is called its year. The Greek were the first people to recognize and give names to some of the planets. The word planet comes from a Greek word meaning wanderer. If a person wanders, this means that he goes from one place to another and does not have a home. The Greek thought that the planets “wandered” in the sky. However, modern scientists can predict the movement of the planets very accurately ____ 1/ A planet revolves around the Earth. ____2/ Venus, Mars and Neptune are planets and stars. ____ 3/ The Greek were the first to recognize some of the planets. ____ 4/ The planets in our solar system travel around the sun and in elliptical orbits

Giúp mình làm bài hằng đẳng thức này vs