3條f.2升f.3數學(率和比)(7點!!)
2011-08-29 2:08 am
回答 (1)
2011-08-29 3:19 am
✔ 最佳答案
1.4x+y=3x+5y
x=4y
x:y=4:1
2.
4.5cm:144cm=1:32
3.
length = 300000cm*1/120000=2.5cm
參考: ME
收錄日期: 2021-04-13 18:11:55
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110828000051KK00745