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Mathematics 8 Online
klmjnmkj:

math problem

klmjnmkj:

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klmjnmkj:

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AZ:

You didn't get it right. This is how you multiply matrices

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AZ:

\[ \begin{aligned} A &=\left[\begin{array}{ccc} -5 & 2 \\ 2 & 2 \end{array}\right] \end{aligned} \] \[ \begin{aligned} B &=\left[\begin{array}{ccc} -4 & 1 \\ 3 & 1 \end{array}\right] \end{aligned} \] This is actually a better image

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klmjnmkj:

ok ill type the anser

klmjnmkj:

20, 2, 6, 2

klmjnmkj:

thats the anser?

AZ:

\[ \begin{aligned} A \times B &= \left[\begin{array}{ccc} (-5\times -4) + (2\times 3) & (-5\times 1) + (2\times 1) \\ (2\times -4) + (2\times 3) & (2\times 1) + (2\times 1) \end{array}\right] \end{aligned} \]

AZ:

@klmjnmkj wrote:
20, 2, 6, 2
No... there isn't even an answer choice with those numbers

AZ:

you have to multiply the row by the column

klmjnmkj:

26, -3, -2, 4

klmjnmkj:

@AZ

AZ:

yes which answer choice is that? you really need to write the numbers in matrix form you can't write it in one line because I don't know if you mean 26 -3 -2 4 or 26 -2 -3 4

klmjnmkj:

C

AZ:

That's correct

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