写机经比考试用时间还长。。。
AA
44. The following is part of a business plan created by the management of the Megamart grocery store.
“Our total sales have increased this year by 20 percent since we added a pharmacy section to our grocery store. Clearly, the customer’s main concern is the convenience afforded by one-stop shopping. The surest way to increase our profits over the next couple of years, therefore, is to add a clothing department along with an automotive supplies and repair shop. We should also plan to continue adding new departments and services, such as a restaurant and a garden shop, in subsequent years. Being the only store in the area that offers such a range of services will give us a competitive advantage over other local stores.”
AI
87. “As technologies and the demand for certain services change, many workers will lose their jobs. The responsibility for those people to adjust to such change should belong to the individual worker, not to government or to business.”
Discuss the extent to which you agree or disagree with the opinion stated above. Support your position with specific reasons and/or examples drawn from your reading, your observations, or your own experience.
Math
a=2^4, b=2^a, 2^x=a^b,求x
选项:2^16,2^18,2^64
我的答案:2^18。(差点选了2^64)
a=16,b=2^16,2^x=(16)^(2^16)=(2^4)^(2^16)=2^(4*(2^16))=2^(2^18),x=2^18。
50个人,每人选一门,18人选a,15人选b,10人选engineering,7人选d。
问选engineering的percentage?
我的答案:10/50=20%。这道题很简单在蛮后面为什么呢。。。弄不懂
9-x^2>0,x^2-2x-8>0,x must be 在哪个范围内?
我的答案:(-3,-2)
第一个求出(-3,3),第二个求出x<-2 or x>4。两个并一并。
一个数列,an=an-2+11,问633是否在数列内?
(1)a1=39
(2)a2=43
我的答案:A
有个人drive from home to library速度是40miles/hour,drive from library to home速度是45miles/hour,求home到library的distance?
(1)来回一共用了34minutes
(2)from home to library比from library to home多用5minutes(这个数字瞎编的但有具体数字)
我的答案:D
(1) S/40+S/45=34/60求出S
(2) S/40=S/45+5求出S
一个人把$1,000存1年,annual rate是r%,compounded semiannually,求一年后的利息是多少?
我的答案:0.025r^2+10r
1000(1+0.5r%)^2-1000=10r+0.025r^2
以下哪个方程在xy-coordinate中的图中只有一个点both coordinates是整数?
选项有:y=7/15x(记不清),y=x+1/2,y=x乘以根号3
我的答案:y=x乘以根号3
游泳池,this side increase 2 feet while other side increase 8 feet,the distance between the two sides is 24 feet,how deep is 4 feet away from the deepest side?
这道题没看懂,乱画了个图用什么相似三角形做的,(24-4)/24=x/(8-2)算出来x=5也不知道对不对。
x>y?
(1)-x>-y
(2)x^2<y^2
我的答案:A
(1)x<y
(2)x=3,y=4 x<y;但x=3,y=-4 x>y
n is even?
(1)n+n is even
(2)n^2+1 is even(还是odd我忘记了。。。)
我的答案:B
一共100人,more people were born in October than in any other month。What is the least possible number of people born in October?
选项:8,9,10,11,12
我的答案:10(差点选了12)这道题在很后面好像最后1,2道的样子。
有9个月,每个月都有8人born。另2个月,每个月都有9人born。那么October就可以有10人born。9*8+2*9+10=100
10^50-74,求sum of all its digits?
我的答案:440。貌似是我做到的唯一一道上月机经中的题。
999。。。9926:48*9+2+6=440
a,b,c,d all positive,ac/bd < c/b?
(1)b>c(好像是这样,总之一个貌似求不出来的条件)
(2)a>d
我的答案:B。(差点漏看了a,b,c,d all positive)
ac/bd-c/b=c(a-d)/bd 因为c,b,d都positive,那么知道a>d就可以了。
再补两道数学:
有个方形(如图,图传上来了么。。)面积MFQ=MNF+FPQ吗?
(1)MQ=2MN
(2)MNPQ是平行四边形
我的答案:B
有个圆锥,求高h
(1)s=6(总之是个具体数字)
(2)底面周长80pai,离底面4的地方周长45pai
我的答案:B。相似三角形做的。
再补两道数学:
有个方形(如图,图传上来了么。。)面积MFQ=MNF+FPQ吗?
(1)MQ=2MN
(2)MNPQ是平行四边形
我的答案:B
有个圆锥,求高h
(1)s=6(总之是个具体数字)
(2)底面周长80pai,离底面4的地方周长45pai
我的答案:B。相似三角形做的。