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Do my Penguin for me


Atomic Boo

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Alright, weird question, but it's for art stuff in school. =P

 

We have to create a design for a tattoo, and now first they want us to look up all sorts of different tattoos and the origins of it and stuff like that. Anyone who knows any good sites about tattoos with a lot of information?

 

I'm just posting this here cause some people might be bored and looking for something to do, and this isn't all that boring to help out with. =P

 

http://www.bmezine.com for peoples experiences and ideas

 

and there's a tattoo design category on deviantart.com

 

stuff about tattoo history, http://www.tattoos-by-design.co.uk, http://en.wikipedia.org/wiki/History_of_tattooing

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I: x+6y=9 |*2

II: 2x+3y=19

______________ (subtract II-I)

-9y=1 -->y=-1/9

 

then put -1/9 for y in one of the equations:

 

x+6*(-1/9)=9

x=9+2/3

x=29/3

 

 

the second one is the same I think.

Yes, I get the same answers as you (but I doubled the second equation).

 

For the second, you can just add the 2 equations:

 

9x = 9

x = 1

y = 2

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i think youre right but i dont really understand

:(

Right:

 

I'll start with the second question:

 

5x - 2y = 1 I

4x + 2y = 8 II

 

I + II => 5x - 2y + 4x + 2y = 1 + 8

=> 9x = 9

=> x = 1

substitute into I:

=> 5 - 2y = 1

=> -2y = 1 - 5

=> -2y = -4

=> 2y = 4

=> y = 2

 

First question:

 

x + 6y = 9 I

2x + 3y = 19 II

 

2(II) => 4x + 6y = 38 III

III - I => 4x + 6y - (x + 6y) = 38 - 9

=> 4x + 6y - x - 6y = 29

=> 3x = 29

=> x = 29/3

substitute into I:

=> 29/3 + 6y = 9

=> 6y = -2/3

=> y = -1/9

 

By the way, => means implies, and the roman numerals (eg. I, II, etc.) are numbering the equations so that I can refer to them.

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