x + 69 = 754
ê cho tớ hỏi làm sao để lấy ảnh hình tô màu trên mạng về để tô màu trên máy tính luôn
ban phung lop minh lam duoc day , nhung ma to ko bit , ai biet thi giup minh boi vi minh tung thay ban ay sao chep hinh tren mang de to mau , to mau o tren may tinh luon
kb nha
cac phep thao tac bit (lap trinh C)
Cho tam giác ABC có ba góc nhọn nội tiếp đường tròn (O). Các đường cao AD, BE, CF cắt nhau tại H và cắt đường tròn (O) lần lượt tại M,N,P.
Chứng minh rằng: Tứ giác CEHD, nội tiếp .Bốn điểm B,C,E,F cùng nằm trên một đường tròn.AE.AC = AH.AD; AD.BC = BE.AC.H và M đối xứng nhau qua BC.Xác định tâm đường tròn nội tiếp tam giác DEF.Bài 2. Cho tam giác cân ABC (AB = AC), các đường cao AD, BE, cắt nhau tại H. Gọi O là tâm đường tròn ngoại tiếp tam giác AHE.
Chứng minh tứ giác CEHD nội tiếp .Bốn điểm A, E, D, B cùng nằm trên một đường tròn.Chứng minh ED = 1/2BC.Chứng minh DE là tiếp tuyến của đường tròn (O).Tính độ dài DE biết DH = 2 Cm, AH = 6 Cm.tìm max biểu thức sau bit : abc=1 ; a,b,c dương .
S=\(\frac{a\left(b+abc+ab\right)}{\left(ab\right)^2+a+abc}\)tự chế từ bài toán của cô ( thiệt đó , mik k chém gió đâu , nhưng mik k bit cách giải , jup vs )
8a58a58a5....8a5 chia het 11
Tìm cs a bit viet 9 lan 8a5
bạn nào có hiểu bít về bất đẳng thức bunhia coopsxki cho tớ bit vs
tính Sxp Stp V của hình non bit ngóc o đỉnh =120° đường kinh =3a/2
III. Use the correct form of the word in brackets for each gap. 1. The schoolboys were ___________ to go to the match between their school and the nearby one. (excite) 2. Many workers are ___________ to receive the pay when they start the first job.(disappoint) 3. To tell the truth, I was _________ to read the funny stories written by my classmate.(amuse) 4. All of us got ________ to hear of the accident happening to our close friend, Henry. (shock) 5. Nowadays no one is __________ to do what he wants if it does harm to the community. (freedom) 6. My pet dog is __________ to please, so I can give it anything edible. (case) 7. The _________ in the village are is sad to hear that there will be no rain in the next two weeks. (farm) 8. Green Peace is an ________ keen to protect the environment (organize) 9. The scientist is sure to find something __________ from his experiment.(use) 11. Mike failed his physics final ________ and had to sit it again. (examine) 12. Their teachers used to punish them by _________ them stay behind after school. (make) 13. Everyone agrees that a good ___________ is important. (educate) 14. This book has a very __________ introduction. (interest) 15. We find listening ________ tests rather difficult. (comprehend) 16. Ben went on to be a very __________ student at university. (success) 17. You should pay more __________ in class if you want to make progress. (attend) 18. Before you begin the exam paper, please read the instructions ________ (care) 19. In our country, children start __________ school at 12 years old.(second) 20. Ben missed the test because of his ________last Monday. (absent) 21. You must be __________ when you open that door. (care) 22. We'll live a happier and __________ life if we keep our environment clean.(health) 23. You are talking complete ___________ (sense) 25. Some __________ groups have declared a boycott of tourism on the island. (environment) 26. Air ____________ can cause illness and even death. (pollute) 27. We're very __________ about our holiday. (excite) 28. Jackson canceled the concert to the great _________ (disappoint) 29. Customers made a formal _________ treated (complain) 30. She declined his invitation because of the _________ of his fans (polite) 31. That old man told me an _________ story (amaze) 32. Gasoline fumes ________ the city air (pollution) 33. I think the careless drivers should be fined ________ (heavy) 34. Many people are concerned about the pollution of the _________ (environmental) 35. The seaside has a _________ climate (health)