tam giác ABC vuông tại A,đường phân giác BD.Kẻ AE vuông góc BD,AE cắt BD ở K a) cm tam giác ABK cân tại B b) CM Dk vuông góc với BC c) Kẻ AH vuông góc BC.CM AK là tia phân giác của góc HAC

Although she was very disappointed, Mary tried to keep calm - Despite

giúp ieemmmm mk đi ạ tkss trình bày rõ ràng trog giấy/ paintt....

Đặc điểm cấu tạo và chức năng của mô máu và mô mỡ Giúp mik nha😅😭😂😁😁😊

Các bạn ơi nhờ giải hộ mình bài này vs : 1. Make full sentences . Then say which type of conditional each sentences is : a ) The weather be good / have a picnic tomorrow ( type ..... ) Vd như type 1 hay 2 hoặc là 0 b ) he miss the bus / be late for school ( type .... ) Help me please !!!!!!!!!!!!!!

Cho hàm số y=f(x)= ( √3- √5)x+ √3+ √5 a. hàm số trên là hàm số đồng biến hay nghịch biến trên tập R b.tính x biết f(x)=1 c. tính x biết f ²(x)=8+2√15

Giúp mình với 9h cô kiểm tra r Vote 5 * ạ

(-1/2) - (-3/5) + (-1/9) + 1/71-(-2/7)+4/35-7/18

mod giúp nha :( I. Choose the best answer to complete each of the following sentences. Circle the correct answer A, B, C or D. This is an example at the beginning . 1. _____________ we take the train instead of the bus? - It is faster. A. How about B. Lets C. Why not D. Why don’t 2. National park helps to _________________ endangered animals. A. protect B. produce C. threaten D. provide 3. If Minh ______________ enough money, he would buy a new house in Ha Noi. A. has B. had C. had had D. has had 4. Remember _____________ the letter for me tomorrow. A. posting B. post C. will post D. to post 5. I didn’t know your father was in ___________ hospital, so I didn’t come and visit him. A. a B. an C. the D. no article 6. Walking 10 miles made him ___________________. A. tiring B. tired C. tire D. to tire 7. Every four years young people from all over Asia gather together to ______________ in Asian Games. A. compete B. fight C. struggle D. quarrel 8. It was not until last year ____________ he got a job. A. when B. that C. which D. where 9. Van Cao is one of the most well-known _____________ in Viet Nam A. actors B. authors C. musicians D. singers 10. A new library ________________ in my village since last January. A. is built B. was built C. has been built D. had been built 11. It would have been a good crop ________________________. A. if the storm didn’t sweep B. had the storm not swept C. Unless the storm hadn’t swept D. hadn’t the storm swept 12. John: What do you think of love story films? Jane: _____________________ A. Oh, I find them interesting B. Yes, I do C. I think so D. I watch them every day II. Put the correct form of the words in the brackets in the following sentences. 1. It was not until 1915 that the cinema (real)_______________ became an industry. 2. He has to repair this (break)_______________ chair. 3. Joan came first in the poetry (compete)____________________. 4. He is one of the most (bore)___________________ people I’ve ever met. He never stops talking and never says anything interesting.

Tìm x ,y khi a, x^2+y^2=0 b, x+y=2;x-y=4 Làm nhanh nha