Cho tam giác ABC vuông tại A, AH là đường cao ( H ∈ BC) a) Chứng minh tam giác ABC đồng dạng với tam giác HBA b) Từ H kẻ HE ⊥ AC ( E ∈ AC), HF ⊥ AB ( F ∈ AB). Chứng minh AE.AC=AF.AB

"Histopathologic types of breast cancer, with relative incidences and prognoses, with "invasive ductal carcinoma" at bottom left" nghĩa là gì? (Ko dùng dịch)

Ai giúp mk với 😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓😓

Bài 1: Tính bằng cách thuận tiện nhất: 156,45x36,74+156,45x62,26x156,45 0,25x46,1x40 Bài 2: Tìm x: X x 3,14 = 75,45 + 56,43 x - 306,7 = 106,9 - 74,3 102,84 + x = 40,87 + 260,45 902,84 - x = 376,42 + 654,3 ( Mn chữa hộ em mấy bài này Please, nay em lên chữa đề rồi nhanh giúp em ạ)

Em hãy kể những triệu chứng ung thư biểu mô tuyến ống xâm lấn.

1. Have you ever regretted (do) something that you should not have (do) or something that you should have (do) but you (not/do). 2. Whenever I get poor marks at school, my mother can't help (get) upset with me. 3. If you have a cough or a sore throat, you should not go out without (cover) your neck up well.\ 4. For an artist, (work) means (try) (think) of new design ideas and (carry) the ideas out in detail. 5. (Learn) how (learn) proves (be) more necessary than the knowledge (need) (enter) a given career field. 6. Mathew's (be) chosen as the most outstanding student in his school made his parents to proud. 7. Parents always expect children (contribute) to the family's household. 8. They keep (ask) you to do something you have not done yet or do not want (do). 9. (Assign) children household chores is one of the best ways (build) self-esteem and a feeling of competence.

giúp mình với cần gấp để đi học : Một hình thang có đáy lớn 12cm , đáy bé 8cm và diện tích bằng diện tích hình vuông có cạnh 10cm . Tính chiều cao hình thang.

Em hãy kể những triệu chứng sarcôm mỡ.

1 tủ sách có 3 ngăn, có 240 quyền sách. Nếu ngăn 1 bớt đi 20 quyển thì sẽ gấp đôi ngăn 2. Nếu ngăn 2 thêm 10 quyển thì gấp 3 lần ngăn 3. Hỏi mỗi ngăn có bao nhiêu quyển sách?

1. I've never heard Tom (swear) 2. You seem (know) this area very well. Yes, I used (live) there. 3. Do you feel like (go) to a film or would you rather (stay) at home? 4. Are you afraid of (be) followed. %. Where did you have your sister (make) your coat? 6. It takes me hours (write) a letter. 7. I'd rather (earn) my living by (clean) the floor than (make) money by (blackmail) people. 8. Don't forget (lock) the door before (go) to bed. 9. Very few people can afford (buy) Bhlyi. 10. Trees (damage) by insects release a chemical in the air what warns nearby undamaged trees (prepare) a defense against these insects.