請問幾題不知道在考數學還是在考英文的題目 誰好心救救庵阿?? 庵從鄉下來的看不懂那麼多英文 拜託了

ken92

Q1

The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present. If the concentration of chemical B is increased by 100 percent, which of the following is closest to the percent change in the concentration of chemical A required to keep the reaction rate unchanged?
                

 

Ans: 40 % increase

看不懂题目
            谁能帮我解释一下
            

Q2

A certain office supply store stocks 2 sizes of self-stick notepads, each in 4 colors: blue, green, yellow, or pink. The store packs the notepads in packages that contain either 3 notepads of the same size and the same color or 3 notepads of the same size and of 3 different colors. If the order in which the colors are packed is not considered, how many different packages of the types described above are possible?

 

Ans: 16

这题我也看不懂
            唉….希望考试不要这样

Q3

At least 100 students at a certain high school study Japanese. If 4% of the students at the school who study French also study Japanese, do more students at school study French than Japanese?

(1)            16 students at school study both French and Japanese.

(2)            10% of students at the school who study Japanese also study French.

 

Ans: B

这题的问题是在问什么阿?? 其实应该也是看不懂题意八
            谁救救我
            帮我解释一下

Q4

Each of the students in a certain class received a single grade of P, F, or I. what percent of the students in the class were females?

(1)            of those who received a P, 40% were Females.

(2)            Of those who received either F or I , 80% were males.

 

Ans: E

为什么阿??

fly_holly

ken,还没考吗?^_^

Q1:浓度=A^2/B,B的浓度增加100%,请问A的浓度增加多少,使得总浓度不变.2^(1/2)-1=0.414.

Q2:either同一种颜色同一款,可能是C(8.1)=8 ;同款不同颜色,C(2,1)*C(4,1)=8

   8+8=16

[此贴子已经被作者于2007-8-30 8:19:06编辑过]

ken92

我….第一次考糟了..烂到我都不想跟别人说
    但师父问我
    我又不能说谎….唉….师父
    再多教徒儿一点数学八!

ken92

帮帮我阿!! 这几题我都看不懂题目
            拜托拜托
            

myamanda

以下是引用ken92在2007-8-30 0:23:00的发言：

Q1

The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present. If the concentration of chemical B is increased by 100 percent, which of the following is closest to the percent change in the concentration of chemical A required to keep the reaction rate unchanged?
    

 

 

Ans: 40 % increase

看不懂题目
   谁能帮我解释一下
   

Q2

A certain office supply store stocks 2 sizes of self-stick notepads, each in 4 colors: blue, green, yellow, or pink. The store packs the notepads in packages that contain either 3 notepads of the same size and the same color or 3 notepads of the same size and of 3 different colors. If the order in which the colors are packed is not considered, how many different packages of the types described above are possible?

 

 

Ans: 16

这题我也看不懂
   唉….希望考试不要这样

Q3

At least 100 students at a certain high school study Japanese. If 4% of the students at the school who study French also study Japanese, do more students at school study French than Japanese?

(1)            16 students at school study both French and Japanese.

(2)            10% of students at the school who study Japanese also study French.

 在一高中里有至少100个学生在学日语，这其中有4%还学法语，那么是否学法语的比学日语的多呢？

1)这个学校有16个学生既学日语又学法语

2)这个学校10%学生既学日语又学法语

 在一高中里有至少100个学生在学日语，这其中有4%还学法语，那么是否学法语的比学日语的多呢？

1)这个学校有16个学生既学日语又学法语

2)这个学校10%学生既学日语又学法语

Ans: B

这题的问题是在问什么阿?? 其实应该也是看不懂题意八
   谁救救我
   帮我解释一下

Q4

Each of the students in a certain class received a single grade of P, F, or I. what percent of the students in the class were females?

(1)            of those who received a P, 40% were Females.

(2)            Of those who received either F or I , 80% were males.

 某个班级每个学生都有P, F, or I中的一个等级来代表(他的成绩),这些学生中有多少是女生？

1)得到p的有40%是女性

2)得到f or i的，有80%是女性

 某个班级每个学生都有P, F, or I中的一个等级来代表(他的成绩),这些学生中有多少是女生？

1)得到p的有40%是女性

2)得到f or i的，有80%是女性

Ans: E

为什么阿??

ken92

大大的谢谢
                 

还有两题
            谁能帮我翻译一下?? 谢谢了

syjsmy

At least 100 students at a certain high school study Japanese. If 4% of the students at the school who study French also study Japanese, do more students at school study French than Japanese?
(1)            16 students at school study both French and Japanese.
(2)            10% of students at the school who study Japanese also study French.
这题怎么解呀？不明为什么选B