Mathematics - 7 October 2007

2007-10-07 23:39:35 · 3 answers · asked by Anonymous

And long division........ how does it work?

2007-10-07 23:39:34 · 13 answers · asked by Anonymous

i got y = 2x+1 as end answer can anyone verify this answer?

2007-10-07 23:29:55 · 3 answers · asked by Ronny A 1

Two bags contain coloured balls.
Bag A contains 5 black balls and 3 white balls.
Bag B contains 6 black balls and 5 white balls.
A ball is drawn at random from Bag A. If a black ball is drawn from Bag A, it will be put back into Bag A. If a white ball is drawn from Bag A, the white ball drawn will be put into Bag B. A second ball is then drawn at random from Bag B.

(i) Calculate the probability that the two balls drawn are both black.
Ans: 15/44

(ii) Calculate the probability that the two balls drawn are of a different colour.
Ans: 83/176


Please show your workings clearly and explain...thank you.

2007-10-07 22:38:34 · 4 answers · asked by Anonymous

can someone give me this very hard questions answer?

(9 raised to the power of 62773 + 2) raised to the power of 83721

it may look like this:

(9 62773 + 2) 83721

since they are squares, they should be small.

2007-10-07 22:23:56 · 4 answers · asked by ? 2

Given that α and β are the roots of the equation x^2 = 3x + 5,
show that α^4 = 57α + 70.

2007-10-07 22:23:09 · 2 answers · asked by Anonymous

Given that vector OA = (p, 4), OB = (4, 1) and OC = (1, 3),

(i) find the value of p if vector OA and BC are parallel.

Ans: -6

Please show me your workings clearly.....and explain too..Thanks

2007-10-07 22:20:15 · 3 answers · asked by Anonymous

there are n people, standing in a circle, first person have a gun, he kills the the person standing next to him, and passes the gun to the next living man, the person who recieves the gun, does the same, this is continued till 1 person in the circle stays alive with a gun. i want to know the number of the last man who is alive with the gun.
example; n=5, first guy kills the 2nd one and passes the gun to the 3rd guy, 3rd kills 4th and 5th recieves the gun, 5th kills the 1st and 3rd recieves the gun, 3rd kills 5th, so 3rd survives.

2007-10-07 21:53:54 · 6 answers · asked by pieceof_iron 2

Write down an expression, in terms of n, for the nth term of the sequence 1, 7, 13, 19, 25, 31, ...

The answer is 6n - 5

I don't understand why it is -5. I know it's 6n as the term increases by 6 down the sequence..But why do you need to put a -5 at the back? Pls explain

2007-10-07 21:44:15 · 6 answers · asked by Anonymous

How can I solve this to have a better representation in order to get a Big Oh notation for this.
n * (log base e (log base 2 (n)))

2007-10-07 21:20:34 · 1 answers · asked by iloveusa 2

Sorry had to repost this, made a big mistake:

I asked this question on answers:
find the limit as n->+infinity:

Lim ((n^3 - 5n^2 + n + 2)^(1/3)-n)

I got the following answer:
-----------------------------
Let's make life simple.
As n --> infinity, the smaller powers of n become negligible
n^3 - 5n^2 + n + 2 --> n^3 - 5n^2 = n^3 * (1 - 5/n)
So the expression tends to
n*[(1-5/n)^1/3] - n
= n* [ 1 - 5/(3n) + O(1/n^2)] - n
= n - 5/3 - n
= -5/3
----------------------

which is right, but I have no idea how he went from:
=n*[(1-5/n)^1/3] - n to: = n* [ 1 - 5/(3n) + O(1/n^2)] - n

I really want to be able to understand this, so that I can do it in the future myself without help, but I have no idea what he did.

2007-10-07 20:50:33 · 3 answers · asked by greeneggs4spam 3

For example Z_p or Z_2?

2007-10-07 20:23:17 · 2 answers · asked by Hugh 2

Take the equation below, trace the steps, and tell me what happened to variable C.

A = B + C (multiply both sides by (A - B))

A(A - B) = (A - B)(B + C) (multiply this out)

A^2 - AB = AB + AC - B^2 - BC (now subtract AC from both sides)

A^2 - AB - AC = AB - B^2 - BC (now simply each side by factoring)

A(A - B - C) = B(A - B - C) (now divide both sides by (A - B - C)

A = B (what happened to C?! My original equation stated that A = B + C, not that A = B. Where did C go?)

2007-10-07 19:44:44 · 7 answers · asked by rawlings12345 4

In a game of chance, 2 cards are drawn at random from a pack of playing cards without replacement. An ace has a value of 1 and all picture cards have a value of 10 each.

What is the probability of

(i) drawing 2 picture cards,

(ii) drawing 2 cards having the same picture (that is 2 kings or 2 queens or 2 jacks).

(iii) the cards drawn having a total value of 18


Please show your steps clearly..

2007-10-07 19:38:43 · 2 answers · asked by Anonymous

I think this is a simple question but i do not know how...hopefully you guys here could clear my doubt..

The question is:

>>> Given that the equation of a curve is y = x^2 + 3x - 4, tell me how to find the value of the minimum point of the curve?

Please show me the steps..I really want to understand..thanks.

2007-10-07 19:33:23 · 6 answers · asked by Anonymous

Pls slove 8,4,1,1/3,___,___
Pls give me what is the nth term also pls

2007-10-07 19:20:55 · 2 answers · asked by engchunh 1

has horizontal tangents.

2007-10-07 19:09:45 · 2 answers · asked by Jarred Katzekis 3

find the value of x to two decimal places in the equation. ln x =3

2007-10-07 19:05:05 · 4 answers · asked by jose u 1

solve for the following equation for x 3^x=27

2007-10-07 19:02:22 · 10 answers · asked by jose u 1

What are the two numbers?

2007-10-07 18:50:12 · 11 answers · asked by Flo 1

Does u =arctan and du =1/1+x^2 and
dv=1/x and v =ln|x|? if so why do I keep getting the wrong answer?

2007-10-07 18:47:50 · 1 answers · asked by houstonman20042002 1

John brought an MP3 player for $240. Given that he offred a 28% discount on the selling price and still made a 20% profit, find the selling price of the MP3 player.

2007-10-07 18:45:17 · 6 answers · asked by engchunh 1

y= 4x + 10

2007-10-07 18:44:19 · 6 answers · asked by Flo 1

a balloonist is directly above a straight road 1.5mi long that joins two villages. She finds that the town closer to her is at an of depression of 35 degrees and the farther town is at an angle of depression of 31 degrees.

2007-10-07 18:43:54 · 4 answers · asked by designsbyarias 1

0, 1, 3, 7, x, 31

What is x?

THANK YOU!

2007-10-07 18:35:17 · 6 answers · asked by Anonymous

2007-10-07 18:23:06 · 5 answers · asked by marik 1

hey guys...
i am aminah...

can you help me with my problem?

here it goes...

FIND THE TIME TO EMPTY A CYLINDRICAL TANK, AXIS VERTICAL, RADIUS 1/2 FT., HEIGHT 1.25 M, INITIALLY FULL OF WATER,THROUGH AN ORIFICE 1/50 FT. IN DIAMETER IN ITS BOTTOM....

hope you can find a marvelous solution to my problem...

thanks in advance....

2007-10-07 18:15:25 · 4 answers · asked by Anonymous

2007-10-07 18:10:22 · 4 answers · asked by Ian S 1

Write the equation of a circle with endpoints of the diameter at (2, -5) and (-4, 3).
Show your work

2007-10-07 17:56:54 · 3 answers · asked by Anonymous

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Picture8.png

2007-10-07 17:42:55 · 2 answers · asked by Anonymous