【SAT官方每日一题】2012年7月17日（Mathematics > Standard Multiple Choice ）

滚吧肥汤圆UID：3272378

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考试类型: Mathematics > Standard Multiple Choice



Read the following SAT test question and then click on a button to select your answer.
$ O: r" G/ {2 B6 v1 P
& j4 Q* T% u/ c7 G! g; K' z6 ~" cIf  and  , and if , which of the following is true?
1 _0 c) P. |  r. a% [" }# \
" R9 {* b* P* b3 A$ l
2 O. r4 B% V5 F5 o5 o$ X- x
8 V. Y6 P% v7 U$ g% @4 _

' x$ w# [) \* T7 ]' `- cA.

B.

C.
+ [+ Z8 M( B+ V
3 U' C8 j6 e% @( \D.

E.  

' ]) a" f% }% g- ]
正确答案:D

解析:

If and , and if , then rewriting as  gives . It follows that , and so . This last equation is equivalent to .

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