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#26 Re: Help Me ! » Help feed polish children » 2006-02-01 20:27:19

yes, this is what i meant justlook......

i kow she is from poland but would like to know which part :-)

#28 Maths Is Fun - Suggestions and Comments » how to send an e-mail to a member » 2006-02-01 16:22:35

kempos
Replies: 18

Is there a possibility to send an e-mail to a member or the staff?

thanks

#29 Re: Help Me ! » Help feed polish children » 2006-02-01 11:41:18

it's not the scam guys. you are transferred to the website with links to sponsors but you don't have to click on them. just click on the stomach, that's all. it's one of the biggest charities in poland, so guys it's not a scam.
there are no pop-ups. you just click on the stomach, are transferred to another website - it says thank you ang gives the name of the sponsor but you DO NOT have to click on it.


thanks

#30 Help Me ! » Help feed polish children » 2006-02-01 03:03:35

kempos
Replies: 12

Want to help to feed polish childeren?

Go to www.pajacyk.pl and click on the stomach. it takes only a few second (you can do it only once per day)

thanks guys

#32 Re: Help Me ! » Complex Numbers » 2006-01-30 22:30:09

ok, got it. however difficult for me to expalin.

check:
http://regentsprep.org/Regents/mathb/3C6/absvlecomlesson.htm

not the sane problem but might help

#33 Re: Help Me ! » Complex Numbers » 2006-01-30 22:25:28

I'm getting 4sqrt2 but also imaginary numbers.

#34 Re: Help Me ! » Complex Numbers » 2006-01-30 22:13:45

is the question about the triangle correct? haveing some problems with it :-(

#35 Re: Help Me ! » Maths Talent Quest Topic » 2006-01-30 21:22:32

difficult to recomend anything, at least for me. But i'm sure here are some guys who will be able to help.

#37 Re: Help Me ! » why does the 5 square trick work » 2006-01-29 20:40:55

he gave 35*35 as an example. he said it works with 35 but asked why :-)

#38 Re: Help Me ! » why does the 5 square trick work » 2006-01-29 20:21:11

Raulito this we already know the question was about proving it.

#39 Re: Help Me ! » Graphing Quadratic Functions » 2006-01-29 16:17:37

if it's -7x^2 the function has a maximum (coordinates: (1/7; 1/7)
if its (-7x)^2 it wil have minimum
x= 1/7

you just leave it like this. i don't think you have to change it into decimal.

#40 Re: Help Me ! » why does the 5 square trick work » 2006-01-29 15:52:32

this is what i came up with:

(10a + 5)^2 and a<10

100a^2 + 100a + 25 as you see you will always have to add 25.

100a^2 + 100a = 100a(a + 1) so you multiply tens by tens plus one, by putting it in front of 25 you "multiply" by 100.

#41 Re: Help Me ! » Equation of a line » 2006-01-29 15:47:13

y1 = m1x + C1
y2 = m2x + C2

the lines to be parallel: m1=m2

Line 1 passes through (2; 3):
y1=m1x + C1
3 = 2m1 +C1

line two:
3x-2y+12 = 0
-2y=-3x-12
y=3/2x + 4                  m2 = 3/2

m1=m2=3/2

line 1:
3=2*3/2 + C1
3=3 + C1
C1=0

equation:
y=3/2x

#42 Re: Help Me ! » Complex Numbers » 2006-01-29 05:14:05

what do you mean by A[0,2]?

#43 Re: Help Me ! » Complex Numbers » 2006-01-29 05:10:57

i can't do it

do not know how to put it here :-(

5. i^(-4k+3) = i^-4k * i^3 = 1/i^4k * (-i) = 1/ i^2^2k * (-i) = 1/-1^2k * (-i) =
1/1^k *(-i) = 1*(-i) = -i

#44 Re: Help Me ! » Complex Numbers » 2006-01-29 04:47:58

solved 8 but dont know how to put it here :-(

how to paste equation from MS word? i have saved this bloody thing as a jpg try to paste it here but it does not work :-(

#45 Re: Help Me ! » Complex Numbers » 2006-01-29 04:34:27

3. A` = [1,3] ?
4. [1,2)?
5. -i

#46 Re: Help Me ! » Complex Numbers » 2006-01-29 04:29:06

n(AUB)=n(A) + n(B) - n(AandB)
40 = 18+24 - n(AB)
n(AB) = 2

#47 Re: Help Me ! » probability » 2006-01-27 00:48:28

probability that the firsy magnolia is north is 1/2
probabbility that the second is south 1/2

different side: 1/4

reversed *2

final: 1/2

#48 Re: Help Me ! » probability » 2006-01-24 03:07:36

mathsyperson, you are saying that there are nine trees in the row which is not the truth!! remember that we have to choose the correct side first

#49 Re: Help Me ! » probability » 2006-01-24 03:02:40

jkiller you were finding the number of ways not the probability

#50 Re: Help Me ! » probability » 2006-01-24 03:00:15

guys in my opinion we also have to remember that the trees have to be put on the same side of the road. here probablity is 1/2 * 1/2 = 1/4

in my opinion this is what we should start with.

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