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男仔銀包入面應該有d咩?

1. A software house found that the project value received over the past year were approximately normally distributed , with a mean of $43,000 and a standard deviation of $8,500 . Suppose the project value remains the same next year.

a) What proportion of new projects would you expect to be $35,000 or less?

b) What proportion of new projects would you expect to be between $30,000 and $45,000?

2.The probability that a bearing meets a specification is 0.92 . Six bearings are picked at random . Calculate the probability that

a)all six meet the specification

b)more than four meet the specification

c)one or none meets specification and

d)and exactly four meet the specification

1. solve the equation e^(x) - 4 + 4e^(-x) = 0

2.solve the equation log 10(x2)= (log10 x)2

please help me to solve the question below,thx!

圖片參考：http://imgcld.yimg.com/8/n/HA00015992/o/2012102212...

我係今年dse畢業生,假設我2年後hd總分過80分或以上,但依2年完全冇參與校內任何活動,咁非聯招D大學會吾會吾肯收我?

想問我用成人百達通由青衣站到機場站要幾錢?如果吾落車去埋博覽館站又要幾錢?THX!

1.Consider f(x)=x^2 - 3x +1 and g(x) = 7+2x.Find the values of x such that f(x+1) = g(3x)

2.If h(x) = 7x^2 - 10x -12 and k(x) = -(5/3)x , find the values of x such that h(x) = k(7x+6)

1.Given that the quadratic equation f(x) = 2x^2 - kx +12 attains its minimum value at x=5/2 .Find

a)the value of k

b)the greatest value of 4 - f(x)

2.Given 2x^2 + 6x +9 = a(x+b)^2 +c,where a,b and c are real constants

a)Find the values of a,b and c

b)Hence,write down the least value of 2x^2 + 6x +9

1.If a and b are the roots of the quadratic equation x^2 - 3x +1 = 0,find the quadratic equations whose roots are given below:

a. 4a-3,4b-3

b. 2/a^2 , 2/b^2

c. 3a^2 + 2,3b^2 + 2

1.Given that tan theta = 3/4 , find the values of sin theta and cos theta by using trigonometric identities.

請問現時有什麼視頻檔案(視訊軟件、硬件)(請詳列)

THX!

Which rc car can turn on the headlight,the left and right signal light,the .When it brakes,it can turn on the brake light(the red light).When it is parking,it can turn on the parking light(the white light).