【SAT官方每日一题】8/1/12 Mathematics > Standard Multiple Choice

滚吧肥汤圆UID：3272378

Read the following SAT test question and then click on a button to select your answer.

If , what is the value of, ?
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A.  40

  s: w8 J8 d& l* xB.  18

& w0 m+ n) w; w& }C.  9

: S  W# k$ q- X3 g6 r$ l0 v8 BD.  4
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E. It cannot be determined from the information given.

  k! H5 \  s. I# Y+ y3 y+ K正确答案:A
9 `# J2 U: ^! i
2 u7 `! Z+ ~5 n' e解析:

6 c' b0 t+ `. b6 [$ Y! y6 C9 VSince, , it follows that , and so . Therefore, .

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