填空题:已知-1<x+y<4且2<x-y<3,则z=2x-3y的取值范围是 .(答案用区间表示) 题目分类:数学(文科) 题目类型:填空题 查看权限:VIP 题目内容: 已知-1<x+y<4且2<x-y<3,则z=2x-3y的取值范围是 .(答案用区间表示) 参考答案: 答案解析:
When did the accident happen? When did the accident happen?A.At about 8:00 a B.At about 9:00 a C.At about 10:0 分类:数学(文科) 题型:填空题 查看答案
CIn the kitchen of my mother’s houses there has always been CIn the kitchen of my mother’s houses there has always been a wooden stand (木架) 分类:数学(文科) 题型:填空题 查看答案