If [img]2011q3/ct_egmatqm_egmatqchoose_0468_201121[/img] and xy=4, then 7y+2x=[i

游客2025-02-27 23

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://www.tihaiku.com/zcyy/3975045.html

相关试题推荐

随机试题

最新回复(0)

If[img]2011q3/ct_egmatqm_egmatqchoose_0468_201121[/img]andxy=4,then7y+2x=[i