Cho hàm số y = (2-4m) x+4. (m khác 1/2) a. Tìm m để hàm số nghịch biến
b. Tìm m biết hàm số qua A(1;5)
c. Vẽ đồ thị với m câu b. Tính góc tạo với Ox

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a diamond or heart. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability of randomly selecting a diamond or heart or club. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability of randomly selecting queen or club. (type an integer or a decimal rounded to three decimal places as needed.)