Cho A nằm trong (O;R) và BC=2R. Các tia BA, CA cắt (O) tại E,F. Chứng minh rằng: BA.BE+CA.CF=4R²

vẽ đậu mầm cute nhá WuW NL:IU MẤY BẸN

rút gọn biểu thức M= 1/1.2+1/2.7+......+1/50.97

hào kiệt khắp nơi về lam sơn ủng hộ lê lợi dựng cờ khởi nghĩa là do

Khoanh vào chữ đặt truo2cs câu trả lời đúng

Cho x=21 Tính: E=x^2022-20x^2021-20x^2020-....-20x^2-20x-5

VẼ ANIME hoặc vẽ người như hồi nhỏ m.n thường hay vẽ = app full màu =)) ngoài lề: trg bình luận

Rewrite the following sentence using the passive. Number 1 is an example for you. 1. I have heard her sing this song several times. -> She has been heard to sing this song several times. 2. People saw him steal your car. --> ………………………………………………………………………………… 3. The teacher is watching her student do the homework. --> ………………………………………………………………………………… 4. He won’t let you do that silly thing again. --> ………………………………………………………………………………… 5. People make the children work hard. --> ………………………………………………………………………………… 6. They made him work all day. --> ………………………………………………………………………………… 7. The detective saw the woman putting the jewelry in her bag. --> ………………………………………………………………………………… 8. The terrorists made the hostages lie down. --> ………………………………………………………………………………… 9. Police advise drivers to use an alternative route. --> ………………………………………………………………………………… 10. She helps me to do all these difficult exercises. --> ………………………………………………………………………………… 11. They think that the first temple existed during the reign of Le Thanh Tong in the 15th century. -> It _____________________________________________________________ -> The first temple ………………………………………………………………………… 12. People know that Phong Nha Cave was found in the 16th century by Cham people. -> It _____________________________________________________________ -> Phong Nha Cave…………………………………………………………………… 13. People claim that the site of the Perfume Pagoda was discovered over 2000 years ago. -> It ______________________________________________________________ -> ………………………………………………………………………………………… 14. They thought that he went to a local restaurant with his girlfriend. -> It _____________________________________________________________ -> He ……………………………………………………………………………………… 15. They have suggested that bright children should take their exams early. -> It _____________________________________________________________ -> Bright children …………………………………………………………………………

Suy nghĩ của anh chị về khẩu hiệu 5k của bộ ý tê, viết 1 đoạn văn, mình cần gấp ạ, came ơn mọi người

Cho ∆ ABC vuông tại A ( đường cao AH) 1) AB = 12 cm, BC = 20cm, Tính BH, CH, 2) BH = 1cm, CH = 4cm. Tính AH, AB, AC ? 3) BH = 1cm, AH = 2cm. Tính CH, AC ? 4) AH = 12cm, CH = 16cm. Tính AB, BH 5) AH = 2cm, BH = CH. Tính BH, CH, AB và AC Bài 2. Tam giác ABC vuông tại A, đường cao AH có AB = 8cm; AC = 6cm. Tính 5AH.