2. 外语
  3. If and xy=4, then 7y+2x=

If and xy=4, then 7y+2x=

admin2011-02-20  14
问题 If and xy=4, then 7y+2x=
选项 A、 
B、 
C、 
D、 
E、 
答案A
解析 If you multiply xy times both sides of the first equation, you get 7y+2x=7xy. You know that xy=4, so 7y+2x=7(4)=28.
转载请注明原文地址:https://kaotiyun.com/show/pJtO777K
本试题收录于： GMAT QUANTITATIVE题库GMAT分类
0

GMAT QUANTITATIVE

GMAT

相关试题推荐
随机试题
最新回复(0)