maths questions
2014-07-31 10:14 am
1. http://s1353.photobucket.com/user/s031026/media/maths_zpsc5df1f43.jpg.htmlcould you please show your steps? 2.http://s1353.photobucket.com/user/s031026/media/maths3_zps6ee34fb8.jpg.htmlwhy is it B but not A? 3.http://s1353.photobucket.com/user/s031026/media/maths3_zps6ee34fb8.jpg.htmlAns: 0.84My ans: [(9/10)(2/3)]^2 +2(9/10)(1/3)(9/10)(2/3) + 2(1/10)(2/3)(9/10)(2/3) = 0.8Why is my answer wrong? 4.http://s1353.photobucket.com/user/s031026/media/maths5_zps14f0814e.jpg.htmlWhy is it A but not C? what's thedifference between these two answers? 5.http://s1353.photobucket.com/user/s031026/media/64F753D6124568768_zpsead8128c.jpg.htmlplease show your steps Million thanks!
回答 (1)
2014-08-01 10:01 am
✔ 最佳答案
咁夜都唔訓去溫書咁勤力？加油！
2014-07-31 02:17:35 補充：
你第三題貼錯圖。
其他的都可以回答你。
我等你第三題更正後一併回答你吧。
2014-07-31 02:31:31 補充：
第 1 題係 HKCEE 92-54
你可以先看片：
https://www.youtube.com/watch?v=TDD5ixyqh7c
我回答你的時候再用第二個方法解答吧。
2014-07-31 03:12:23 補充：
請看解答：
https://s.yimg.com/rk/HA00430218/o/1640233302.png
欠第三題，等緊你。
2014-08-01 01:47:17 補充：
係喎，咁 Question 1 也讓我更正吧。
2014-08-01 02:01:59 補充：
圖片參考：https://s.yimg.com/lo/api/res/1.2/ZQit8r6YM3UMER1bF6V.OQ--/YXBwaWQ9dHdhbnN3ZXJzO3E9ODU-/http://i.imgur.com/ZH9B85L.gif
您好~
Please read:
圖片參考：https://s.yimg.com/rk/HA00430218/o/473163037.png
2014-08-01 02:02:25 補充：
(◕‿◕✿)
收錄日期: 2021-04-15 16:03:37
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20140731000051KK00018