Question

Which product represents the solution to the system?

Answer 1

First do this :(this is not a system !)
Look :
How can u answer from it :
8.x=16
x=?

Answer 2

Now we should be have :
(3,2)/(11,24)=?
@ejune420:Understand ?!:)

Answer 3

@ejune420:Is my answer fall?

Answer 4

all the answer choices are matrices

Answer 5

OK !
I understand it fall :(
Excuse me :(

Answer 6

Did u get it the answer?

Answer 7

What the problem?

Answer 8

@ejune420 do you know how to get the inverse matrix for the 2x2 matrix there?

Answer 9

@jdoe0001 yeah I know how to get the inverse

Answer 10

ok well, then the "solution" for it will be \(\large \begin{array}{cccl}
A& X & B\\
\begin{bmatrix}
1& 1\\
2& 4
\end{bmatrix}&
\begin{bmatrix} x \\ y\end{bmatrix}=&
\begin{bmatrix}3\\2\end{bmatrix}\\
\textit{solution will be at }\\
A^{-1}\times B
\end{array}\)

Answer 11

the result will be a 1x2, just like the "X" matrix and will equate the variables

Answer 12

thanks a bunch for the help, I'm gonna try to work it out now :)

Answer 13

yw

Answer 14

so the discriminant of the 2x2 "A" matrix is 2, so the inverse will be \(\large A=
\begin{bmatrix}
1& 1\\
2& 4
\end{bmatrix}
A^{-1} = \cfrac{1}{2}\begin{bmatrix}
4& -1\\
-2& 1
\end{bmatrix}\)

Answer 15

I got it :)

Answer 16

determinant rather... is 2

Answer 17

ok :)

Answer 18

thanks so much!!:)