anonymous
  • anonymous
Please help..will give out medals!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
anonymous
  • anonymous
how do I solve these? What are they called? I have never seen them before!
anonymous
  • anonymous
help!

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anonymous
  • anonymous
\[-6 \times\left(\begin{matrix}-2 \\ 7\end{matrix}\right) = \left(\begin{matrix}12 \\ -42\end{matrix}\right)\]
anonymous
  • anonymous
ok?
anonymous
  • anonymous
anonymous
  • anonymous
what are they called?
anonymous
  • anonymous
so do I multiple 4 and 0,1,1,1?
anonymous
  • anonymous
I don't know what are they called in English :D yes,do it ;)
anonymous
  • anonymous
so what will be the answer?
anonymous
  • anonymous
calculate it,
anonymous
  • anonymous
and about question,number 42...
anonymous
  • anonymous
can you solve it for me?
anonymous
  • anonymous
\[-\left(\begin{matrix}x \\ 0\end{matrix}\right) = \left(\begin{matrix}1 \\ 7\end{matrix}\right) - \left(\begin{matrix}0 \\ 7\end{matrix}\right)\]
anonymous
  • anonymous
yes,i can ;)
anonymous
  • anonymous
so:
anonymous
  • anonymous
thanks
anonymous
  • anonymous
\[\left(\begin{matrix}-x \\ 0\end{matrix}\right) = \left(\begin{matrix}1 \\ 0\end{matrix}\right)\]
anonymous
  • anonymous
-x = 1 --> x = -1
anonymous
  • anonymous
ok?
anonymous
  • anonymous
oh ok
anonymous
  • anonymous
any problem?
anonymous
  • anonymous
what you do 41 too?
anonymous
  • anonymous
i didn't solve it,but you can use calculator and solve it easily!
anonymous
  • anonymous
how? add everything?
anonymous
  • anonymous
I still need help.
anonymous
  • anonymous
4x0111 =? 4x(-1-511) = ?
anonymous
  • anonymous
I want to know what they are called.
anonymous
  • anonymous
4x0111=0
anonymous
  • anonymous
I can't tell you!because i can't speak English very well!
anonymous
  • anonymous
can you solve (41) now?
anonymous
  • anonymous
no
anonymous
  • anonymous
I am going to keep asking..I don't understand it
anonymous
  • anonymous
ok,i will solve it for you,but i can't tell you what are they called!
anonymous
  • anonymous
ok
anonymous
  • anonymous
I think (41) is incorrect!!
anonymous
  • anonymous
sorry,I can't solve (41), did you understand (42)?
anonymous
  • anonymous
can someone else please help?
Littlebird
  • Littlebird
http://en.wikipedia.org/wiki/Matrix_(mathematics) This is what they are called
anonymous
  • anonymous
oh ok thanks
anonymous
  • anonymous
@Littlebird , Thank you ;) this is very good
Littlebird
  • Littlebird
http://www.mathsisfun.com/algebra/matrix-multiplying.html
anonymous
  • anonymous
thank you!
anonymous
  • anonymous
can you help me with 41?
Littlebird
  • Littlebird
I don't think 41 has a solution.
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Littlebird
  • Littlebird
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