√7-5 + √4t-20 - 1/5*√9t-45 =3 giúp mình với ạ

cho tam giác ABC cân tại. Vẽ đường cao BH và KC 1.Chứng minh tam giác BKC=BHC 2.Chứng minh AH=AK 3Tứ giác BHKC là hình thang cân

Giải hộ mik với ạ hứa votes 5 sao

làm nhanh vs đúng thề vote 5s :))

1.​My dad doesn’t mind​​my mom from work every day. ​A. pick up​B. picked up​C. picking up​D. picks up 2.​Using computers too much may have harmful effects​​your mindsand bodies. ​A. on​B. to​C.with​D. onto 3.​I love the people in my village. They are so​​and hospitable. ​A. friendly​B. vast​C.slow​D.inconvenient 4.​Among the​​, the Tay people have the largest population. ​A. groups​B. majorities​C. ethnic minorities​D. ethnic cultures. 5.​People in the countryside live​​than those in the city. ​A. happy​B. more happily​C. happily​D. less happy 6.​Viet Nam is​​multicultural country with 54 ethnic groups. ​A. a​B. an​C.the​D. A and C 7.​Ann finds books ……………. because she can learn many things from them. ​A. are useful​B. be useful​C. useful​D. being useful 8.​Louise are very fond ……………. going camping with friends at weekends. ​A. about​B. of​C. in​D. with 9.​She has decided to ……………. swimming because it is very good for her health. ​A. take in​B. take up​C. take to​D. take with 10.​It is very ……………. to watch these movies. I think you should watch them. ​A. entertaining​ B. entertained ​C. entertainment ​D. entertain 11.​I don’t feel like ……………. shopping now. I need to have some sleep to feel better. ​A. going​B. to go​C. go​D. to going 12.​That dress looks so ……………. I want to buy it. Do you think it is nice? ​A. fancy​B. funny​C. crazy​D. noisy 13.​I love being outdoors, but today I ……………. staying at home. ​A. want​B. don’t mind​C. like​D. prefer 14.​Teenagers often prefer travelling with their friends ……………. travelling with their parents. ​A. from​B. than​ C. as​D. to 15.​She loves winter sports, so I think she should go ……………. this winter. ​A. swimming​B. hiking​C. ice-skiing​D. jogging 16.​About favorite leisure activities, she and I share many things in …………….​ ​A. similarity​B. general​C. common​D. the same

Tìm x : (3/4x-9/16).(1/3+-3/5:x)=0

Ngôn ngữ lập trình gồm những gì?? Mn làm nhanh giúp em,em camon ạ.................

dựa vào các câu hỏi sau viết đoạn văn ngắn về trường học. Mn làm giúp em với ạ. Em cảm ơn nhiều ạ

Cho tam giác ABC có MN thuộc AB sao cho AM = MN = NB . Gọi E là trung điểm BC . KẺ MC cắt AE tại K a) Chứng minh NE là đường trung bình của tam giác BCM ? b)CHứng minh NE // MK ( giup em voi em hua se danh gia nam sao a ) :(

Khái quát tiểu sử các nhà sang lập chủ nghĩa Mác?