Question

Please help..will give out medals!

Answer 1

how do I solve these? What are they called? I have never seen them before!

Answer 2

help！

Answer 3

\[-6 \times\left(\begin{matrix}-2 \\ 7\end{matrix}\right) = \left(\begin{matrix}12 \\ -42\end{matrix}\right)\]

Answer 4

ok?

Answer 5

？

Answer 6

what are they called?

Answer 7

so do I multiple 4 and 0,1,1,1?

Answer 8

I don't know what are they called in English :D yes,do it ;)

Answer 9

so what will be the answer?

Answer 10

calculate it,

Answer 11

and about question,number 42...

Answer 12

can you solve it for me?

Answer 13

\[-\left(\begin{matrix}x \\ 0\end{matrix}\right) = \left(\begin{matrix}1 \\ 7\end{matrix}\right) - \left(\begin{matrix}0 \\ 7\end{matrix}\right)\]

Answer 14

yes,i can ;)

Answer 15

so:

Answer 16

thanks

Answer 17

\[\left(\begin{matrix}-x \\ 0\end{matrix}\right) = \left(\begin{matrix}1 \\ 0\end{matrix}\right)\]

Answer 18

-x = 1 --> x = -1

Answer 19

ok?

Answer 20

oh ok

Answer 21

any problem?

Answer 22

what you do 41 too?

Answer 23

i didn't solve it,but you can use calculator and solve it easily!

Answer 24

how? add everything?

Answer 25

I still need help.

Answer 26

4x0111 =?
4x(-1-511) = ?

Answer 27

I want to know what they are called.

Answer 28

4x0111=0

Answer 29

I can't tell you!because i can't speak English very well!

Answer 30

can you solve (41) now?

Answer 31

no

Answer 32

I am going to keep asking..I don't understand it

Answer 33

ok,i will solve it for you,but i can't tell you what are they called!

Answer 34

ok

Answer 35

I think (41) is incorrect!!

Answer 36

sorry,I can't solve (41),
did you understand (42)?

Answer 37

can someone else please help?

Answer 38

http://en.wikipedia.org/wiki/Matrix_(mathematics)

This is what they are called

Answer 39

oh ok thanks

Answer 40

@Littlebird , Thank you ;) this is very good

Answer 41

http://www.mathsisfun.com/algebra/matrix-multiplying.html

Answer 42

thank you!

Answer 43

can you help me with 41?

Answer 44

I don't think 41 has a solution.