# student1187

Math

## 解答 0

• tutor_fran
2018-10-18 17:40:31
9) let the number of male is x, female is y, then, 2y=x, x+y=16 3y=16, y=5.3333333, because at most carry 16, if y=5, x=2y=10, then 10+5=15. we find that the max female y=5.
• student1187
2018-10-18 17:48:12
第8题尼老师
•  tutor_fran 2018-10-18 17:40:31
• 9) let the number of male is x, female is y, then, 2y=x, x+y=16 3y=16, y=5.3333333, because at most carry 16, if y=5, x=2y=10, then 10+5=15. we find ..
• student1187
2018-10-18 17:52:18
8题会不会
•  tutor_fran 2018-10-18 17:40:31
• 9) let the number of male is x, female is y, then, 2y=x, x+y=16 3y=16, y=5.3333333, because at most carry 16, if y=5, x=2y=10, then 10+5=15. we find ..
• tutor_fran
2018-10-18 17:55:01
不會，我要想一想，你括號是不是填錯了，是不是X-2才對？
•  student1187 2018-10-18 17:52:18
• 8题会不会
• student1187
2018-10-18 17:56:00
是，可能是的。
•  tutor_fran 2018-10-18 17:40:31
• 9) let the number of male is x, female is y, then, 2y=x, x+y=16 3y=16, y=5.3333333, because at most carry 16, if y=5, x=2y=10, then 10+5=15. we find ..
• student1187
2018-10-18 17:58:49
Sir 你会不会
•  tutor_fran 2018-10-18 17:40:31
• 9) let the number of male is x, female is y, then, 2y=x, x+y=16 3y=16, y=5.3333333, because at most carry 16, if y=5, x=2y=10, then 10+5=15. we find ..
• student1187
2018-10-18 18:01:31
是不是7.6
•  tutor_fran 2018-10-18 17:40:31
• 9) let the number of male is x, female is y, then, 2y=x, x+y=16 3y=16, y=5.3333333, because at most carry 16, if y=5, x=2y=10, then 10+5=15. we find ..
• tutor_fran
2018-10-18 18:02:44
大的數是X，小的數是X-2, 括號只需要填2就OK，那麼根據題目，3X-(X-2)＞25, 2X＋2＞ 25, 2X＞23, X＞11.5, 那麼最小的X應該是12, 這是我的想法，不知道對不對，你再請教一下其他老師吧
•  student1187 2018-10-18 17:56:00
• 是，可能是的。
• student1187
2018-10-18 18:07:20
呀sir 可不可以check 下这个

#### 附加文件

• tutor_fran
2018-10-18 19:47:29
no problem
•  student1187 2018-10-18 18:07:20
• 呀sir 可不可以check 下这个

jpg, gif, png, doc, docx, pdf, xls, mov, mp4, m4a, mp3 (檔案上限為50M)