还没有登录哦!

[Problem Solving]

试题详情

题目:

If x, y, and k are positive numbers such that ( )(10) + ()(20) = k and if x < y, which of the following could be the value of k ?

s

选项:

A、10
B、12
C、15
D、18
E、30

答案:

D

提问:

PS

解答:

点赞0
阅读496
解答: sysadmin

提问:

PS

解答:

点赞0
阅读497
解答: sysadmin老师

问个问题

点我领取
免费专项课程
在线咨询