Cho tam giác ABC có BC = 6cm. Vẽtrung tuyến AD, lấy điểm I trên AD sao cho = 12. BI cắt AC tại E, CI cắt AB tại F. a) Chứng minh rằng: EF // BC. b) Tính EF

Suppose you want just guess at the answers in a 5 question multiple-choice test. each question has 3 responses and only one is correct. what is the probability of getting two questions right just guessing? 20 points 0.3275 0.2753 0.7532 none of the above

Bo is buying a board game that usually costs bb dollars. the game is on sale, and the price has been reduced by 18\%18%. what could you find the answer?

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola