涛涛版GWD29－10、18、28、30、36题

A.       $92

B.       $96

C.     $104

D.     $120

E.      $240

Q30:

What is the value of (2x – 5)³ ?

(1)     (2x)³ = 216

(2)     (2x + 3)² = 81

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

Q36:

Is x > 5 ?

(1)     x² > 25

(2)     2x + 7 > 0

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

Q10:

               
            [attachimg]56827[/attachimg]

In the figure, AB = AE = 8, BC = CD = 13, and DE = 2.  What is the area of region ABCDE ?

A.       76

B.       84

C.       92

D.     100

E.      108

OMG~~~my computer can't print Chinese...

555~~~I have the same question about Q10.

18.Because "Each of the 10 nests contained the same number of eggs.", the standard deviation should be 0.

28.Expected dividends are 0.4 per share, and the actual dividends are 0.4+(1.10-0.80)/0.10.

   P.S. the quarterly here means "at 3-month intervals"

30. You can easily determine the value of x from the given equation of (1), but not (2).

36. x^2>5, so x>5 or x< -5; 2x+7>0, so x>-5.  =>  x>5

[attachimg]56833[/attachimg]

梯形AEDB 面积是40

等腰三角形BDC等边是10，腰是13，可求出高是12，所以面积是60

合计面积就是100了

谢谢楼上2位

第28题 我是酱紫求的：[(1.1-0.8)*0.04+0.8/2]*200 

没有用到2楼MM说的 P.S. the quarterly here means "at 3-month intervals" 这个条件，不知是不是我错了？

这题把BD求出来是关键！多谢 sammy生米 啦！！