1) Cho tam giác ABC; trên cạnh AB lấy điểm M; trên cạnh AC lấy điểm N. Chứng minh rằng MN<BC 2) Cho tam giác ABC cân tại A trên cạnh BC lấy điểm D bất kì ( D không là trung điểm BC). Chứng minh rằng AD<AB 3) Cho tam giác ABC có AB<AC. Gọi M trung điểm BC. Kẻ AD phân giác A ( D thuộc BC). Chứng minh rằng: BD<BM

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giá trị của biểu thức 3/8 + 3/8 : 1/2

Tính thuận tiện và giải chi tiết giúp mình bài 4 nhé.

Các bạn ơi giải giúp mình 2 bài này với ạ.Mình cảm ơn

Chỉ mình với ạ từ 6-12 á có hình luôn càng tốt ạ

Ai giúp mik 2 câu này với Thấy OK thì cho 5 sao lun;-;

I.Choose the word or phrase which best completes each of the following sentences. Write your answers in the table below(2pts) 1. Jack is……. His jokes often make his friends laugh a lot. A. generous B. humorous C.easy-going D. unusual 2. I’m sorry. I’m not………to help you lift the table. A. enough strong B. too strong C. strong enough D. enough strength. 3. We…….in our present house for 5 years. A. live B. have lived C. are living D. lived. 4. We used to wash clothes by hand. Now we have a……. A. washing machine B. dishwasher C. hair dryer D. refrigerator. 5. It took me a long time to get used……… glasses. A. to wear B. to wearing C. wear D. wore. 6.Last night he didn’t go home……..10 o’clock. A. until B. at C. after D. in front of 7."Don’t shout", I said to Jim. A. I told Jim don't shout B. I told to Jim not to shout C. I told Jim not to shout D. I said to Jim don't shout. 8. Hoa was very surprised when she looked at………………………..in the mirror. A. she B. hers C. herself D. her 9. She went to market without………. anything. A. buy B. to buy C. bought D. buying 10. Since we have to be there by 8.30, we………. take a taxi. A. had better B. may C. ought D. are able to 11. I’ve never seen such an interesting ………….. A. performing B. performer C. performance D. performed 12. It’s at least a month since……………….John. A. I last seen B. I have last seen C. I last see D. I last saw 13. I like my sister’s house. It is a ……………… A. new beautiful house B. beautiful house new C. beautiful new house D. new house beautiful 14. Living in the country is not expensive. And it isn’t complex ………………. A. either B. too C. neither D. so 15. The new shopping mall is quite …………..the present shopping area. A. different from B. the same C. like to D. similar 16. “What …………………?” – “She is very nice.” A. did Sandra like B. is Sandra like C. does Sandra like D. was Sandra like 17. Thank you very much .................... the Christmas gift . A. of B. with C. for D. about 18. ………….. she plays the piano! A. How well B. How good C. What well D. What good 19. Life here is very ……………. A. peace B. peacefully C. peaceful D. peacefulness 20. It is raining outside, and Tom brought his umbrella with him …………..he wouldn’t get wet.A. so as to B. in order C. so that D. in order to

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