【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, ?
$ r+ |* e# \9 `  B4 l
* |: q# c6 E( n  A* V



$ U4 f& H, T. R' I, V) t! lA.  40
, w' L& x4 {1 G
B.  18
8 W1 u7 U! a4 O- o7 a5 e. \" X
C.  9

+ z" G: e; _- F& h8 t1 {* lD.  4

E. It cannot be determined from the information given.
5 q0 d; d- E: W9 t
, H* g. ~. p' l( \4 g9 H" \3 Y正确答案:A

解析:
* E. Z; _* R3 y8 U  [: S0 S
Since, , it follows that , and so . Therefore, .


3 p. Z; }: }1 {" C4 w- ~. l