Cho tam giác MNP có góc N=90 độ, góc P= 30 độ. Kẻ đường cao NH, trên đoạn HP lấy điểm K sao cho MH=HK. Từ P kẻ PE vuông góc với NK. a)Chứng minh: tam giác MNH= tam giác KNH b) So sánh NH và KP c) Gọi giao điểm của NH và EP là Q. Chứng minh QK vuông góc với NP d) Chứng minh HP=3.HM Các bạn làm giúp mình với

a) Tìm các cặp tam giác bằng nhau trên hình. Giải thích vì sao? b)Vẽ BH AD, CK AC, chứng minh KC = HB. Chứng minh KC = HB và ΔABH = ΔACK. b)Vẽ BH AD, CK AC, chứng minh KC = HB. Chứng minh KC = HB và ΔABH = ΔACK. c) Gọi . C/m AI là tia phân giác của góc KAH.

Định luật Fa-ra-day về suất điện động cảm ứng trong mạch kín? Công thức? Chú thích công thức?

1. Construct a sentence from the words given: When/ they/ arrive/ shop/ buy/ fridge/ they/ know/ all/ fridges/ sell. A. When they arrived at the shop to buy a fridge, they knew that all fridges had been sold. B. When they arrived at the shop to buy a fridge, they knew that all fridges have been sold. C. When they arrive at the shop to buy a fridge, they know that all fridges had been sold. D. When they arrived at the shop to buy a fridge, they knew that all fridges had sold. 2. Change the following sentences into Passive voice: Rescue workers had taken local people to a safe place. * A. Local people had taken to a safe place by rescue workers. B. Local people had been taken to a safe place by rescue workers. C. Local people was taken to a safe place by rescue workers. D. Local people took to a safe place by rescue workers. 3. Change the following sentences into Active voice: All of the buildings in my neighbourhood were destroyed by the hurricane. * A. The hurricane was destroyed by all of the buildings in my neighbourhood. B. The hurricane had destroyed all of the buildings in my neighbourhood. C. The hurricane destroyed all of the buildings in my neighbourhood. D. The hurricane destroyed by all of the buildings in my neighbourhood.

5728 m2=0,5728.... 2070.....=0,2070 ha. 412m2.....=2,0076m2

l. using passive voice 29. Turn on the lights!​​​ 30. Close the door!​​​ 31. Her hair is very long (cut) She has to​​​ 32. The taxi driver collected us. (Had)​​​​ 33. The mechanic fixed the brakes. (Had)​​​ 34. We read the newspaper every day at home (deliver) We​​​ 35. My husband looked after our children. (Got)​​​ 36. There was a mistake in their accounts (check) They​​​ 37. The nurse will take your temperature. (Have)​​​​​​ 38. The teacher checked my writing. (got)​​​ 39. Your suit looks very dirty (clean) You should​​​ 40. The shop assistant gave me a discount. (got)

There are many causes of _________ including nuclear explosion, nuclear accidents and nuclear waste.

-564+[(-724)+564+224] Ai trả lời dc hộ mk vs ạ :(

Bài 1 : Cho biểu thức A = -4/n-1 ( với n thuộc Z ) a) Số nguyên n phải có điều kiện gì để A là phân số b) Tìm các số nguyên n để A có giá trị nguyên Bài 2:Cho phân số B =n/n-4 ( với n thuộc Z ) a) Tìm số nguyên n để B là một phân số b) Tìm tất cả các số nguyên n để B có giá trị nguyên Bài 3 :Chứng minh rằng các phân số sau có giá trị là số tự nhiên a) 10 mũ 2011+2/3 b)10 mũ 2010+8/9 Bài 4 : Tìm các số nguyên x ; y biết a) 36/y-2 = 44/77 Mong các bạn giúp mình nhanh mình đag cần gấp

III. Choose the best answer A, B, C or D to complete these sentences 1. Yesterday, a terrible storm………..the rural area of Ha Giang Province. A. erupted B. struck C. shook D. raged 2. Villagers rushed into public shelters as soon as the volcano………. A. erupted B. struck C. collapsed D. raged 3. Hundred of buildings were completely destroyed when the earthquake………the city. A. buried B. struck C. shook D. raged 4. The mudslide………..the whole village while people were still sleeping in their house. A. buried B. erupted C. shook D. raged 5. The forest fire……….for eight hours and some animals were badly injured or killed A. erupted B. struck C. collapsed D. raged 6. We managed to run out of the house into the street before the walls……….. A. erupted B. struck C. collapsed D. raged 7. The rescue workers set up a camp to provide…………..for the flood victims. A. shelter B. aid C. debris D. forest fire 8. On the second day, there was a rainstorm which helped to put out the………. A. house B. aid C. debris D. forest fire 9. When the storm stared, they took……….in a cave A. shelter B. aid C. debris D. forest fire 10. As the tornado moved through the town, high winds scattered……….across the street. A. house B. aid C. debris D. forest fire IV. Complete these sentences with the suitable words (drought ,flood, hurricane, landslide ,tornado) 1. When there is a ___________, a lot of water covers an area where there usually isn’t water. 2. A ___________ refers to a long time without rain. 3. When there is a ______________, a lot of rocks and earth fall down a hill. 4. A____________ is a storm with a lot of wind that moves over water. 5. A____________ is a storm in which the air moves very quickly in a circle.