百度试题 结果1 题目If x y, which of the following must be true? ( ) A. x^2 y^2 B. -y<-x C. x^2 xy D. xy y^2 E. 2x y 相关知识点: 试题来源: 解析 B 反馈 收藏
Given that n is positive, it could be a positive fraction, 1, or a fraction of whole number greater than 1. If n = 1, then case I is not true since n2 = 1 Likewise in II if n = 1, n - n2 = 0, and the statement is not true. In III, if n = ½, then 2n - ...
If a, b, and c are real numbers, which of the following must be true? 返回 123456789101112131415161718 If a, b, and c are real numbers, which of the following must be true? A.a+(b+c)=(a+b)+c B.a-(b-c)=(a-b)-c C.a*(b*c)=(a*b)*c...
If a, b, and c are real numbers, and a ≠ 0, which of the following must be true? A.a*(b+c)=a*b+a*c B.a*(b-c)=a*b-a*c C.b+ca=ba+cab+ca=ba+ca D.b−ca=ba−cab−ca=ba−ca E.ab+c=ba−acab+c=ba−ac ...
If xy=x+y and y> 2,which of the following must be true about A.x=yB.x=0C.x=1D.0 扫码下载作业帮拍照答疑一拍即得 答案解析 查看更多优质解析 举报 xy-x-y+1=1,即(x-1)(y-1)=1,选E 解析看不懂?免费查看同类题视频解析查看解答...
If 0< b_n< a_n for n≥q 1, which of the following must be true? ( )A. If limlimits _
The sine of an angle is equal to the cosine of the angle's complement. This relationship can be expressed by the equation sin x°=(cos)(90°-x°). Therefore, if sin x°=a, then (cos)(90°-x°) must also be equal to a.Choices A and B are incorrect and may result from ...
If a and b are nonzero numbers such that a lt b , which of the following must be true ? I. 1a>1b II. a2<b2 III.b2≥1 ANone BI only CII only DIII onlySubmit Let a and b be numbers such that −a<b+10 II. |b|a+1 AI only BI and II CII only DI, II, and...
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If xy + z = x(y + z), which of the following must be true?_出国考试答疑器_GMAT_试题_Problem Solving