cho tam giác ABC vuông tại A ,AB=8cm ,AC=15cm a)BC=? b)Gọi I là giao điểm của các tia phân giác của tam giác ABC. Tính khoảng cách từ I đến cạnh tam giác

Giải giúp mình với ạ. Mình cảm ơn!!

Đốt cháy hoàn toàn 5,6 lít hỗn hợp X (chỉ chứa các hiđrocacbon ở thể khí). Dẫn sản phẩm cháy qua bình (1) đựng H2SO4 đặc, bình (2) đựng nước vôi trong dư thấy khối lượng bình (1) tăng 3,15 gam và bình (2) xuất hiện 51,25 gam kết tủa. Trong X phải có hiđrocacbon nào dưới đây? A. CH4. B. CHCH. C. CH2=CH2. D. CH2=CHCH=CH2.

Giúp mk vs... .Milk............ To the houses by the milkman everyday A. Brings B. Is bought C. Is bring D. Brought

chỉ em câu 4 với ạ được thì chỉ cả 4 câu dùm em với em sẽ vote ạ

. The ship ran _________ on the beach near the habour A. afloat B. adrift C. aback D. aground 2. The recorder was _________; I’d like to have my money back. A. ineffective B. defective C. deficient D. deceptive 3. Time _______ and they still hadn’t heard anything from their son. A passed B passed by C went D went on 4. The film didn’t ________ to my expectations. It was nothing out of the ________. A come/ordinary B come/average C live up/ordinary D live up/average 5. Professor Howard has always been held in high ________ among his students for his profound knowledge. A respect B admiration C prestige D esteem 6. The protesters occupying the streets have _______ the traffic in the centre of the city. A dispelled B dislocated C disturbed D disrupted 7. Helen was ________ disappointed when she learnt that she hadn’t won the beauty contest. A seriously B bitterly C strongly D heavily 8. Has anyone managed to ________ the meaning of the declaration? A seize B snatch C grip D grasp 9. Albert was praised for having ________ with his research work in spite of terrible difficulties. A insisted B lasted C sustained D persevered 10. I love to do things for children because I get a _______ out of it. A. pass B. shoot C. kick D. move 11. It is already 3 o’clock. Can you ________ time to catch the bus? A. have enough B. have it in C. make in D. make it in 12. So as not to get another bad mark in the final exam, she is ________ herself. A exert B absorb C endeavour D deploy 13. You can have the car at your _________ for the whole week as the boss is on business. A obligation B care C disposal D duty 14. The authorities probably want to be tough and won’t _________ to the hijackers’ absurd demands. A abandon B resign C yield D collapse 15. This training is ________ for those who prefer a heavy body workout. A aimed B offered C intended D targeted 16. People under eighteen aren’t ________ for membership in this association. A viable B eligible C permissible D legal 17. You’ll be risking your ________ if you swim down the river without any assistance. A head B shoulder C nose D neck 18. He really has the vision and has made adequate ________ for his retirement. A. condition B. assistance C. provision D. allowance 19. Helen stands in ________ of her new teacher. A. respect B. admiration C. regard D. awe 20. I little ________ had a small accident with the car. One of the wings was a. A. stained B. dented C. jammed D. cracked

So sánh thành phần môi trường nuôi cấy trong nuôi cấy không liên tục với nuôi cấy liên tục Giúp mình với nha😊 Gấp lắm🙏🙏

Cho Tam giác ABC có AB=25cm, AC=26cm. Kẻ AH vuông góc với BC tại H, AH =24cm. Tính BC

Ai cứu mình với mai mình phải nộp rồi mình cảm mơn rất nhiều

Giúp mình bài này nhé mình cảm ơn các bạn rất nhiều 😇😇😇