【简答题】Alexi s Vaughan,17,sat tiredly in the passenger seat of her dad’s car.The early Saturday morning run with her father,Michael,was part of the punishment.She stared sadly out of the window at the cornfi...
【单选题】Need a Ride??? Take the Bus! Parsons Holiday Tours Ltd. A five day package—March 6th—10th, 200The tour includes Motorcoach transportation, 4 nights accommodation, Weekend admission to the Cowboy Festi...
【简答题】如图,在直角坐标系 xOy 中,点 A 在 x 轴的正半轴上,点 B 在 y 轴的正半轴上, 以 OB 为直径的⊙ C 与 AB 交于点 D , DE 与⊙ C 相切交 x 轴于点 E , 且 OA = cm,∠ OAB ='30°.' (1)求点 B 的坐标及直线 AB 的解析式; (2)过点 B 作 BG ^ EC 于 F , 交 x 轴于点 G , 求 BD 的长及点 F 的坐标; (3)设...