1. What is the solution of the matrix equation?

|9 4| |-9 -6|
| | X =| |
|2 1| |-1 -8|

A.) |5 -26|
|9 -60|

B.) |-5 26|
|-1 -8|

C.) |-5 26|
|9 -60|

D.) |9 26|
|9 1|

I think the Answer is B. But I am unsure.

Thanks.

The answers for lesson 4 inverse matrices and systems.

what is the solution of the system.... |9 4| |-9 -6|
| | X =| |
|2 1| |-1 -8| the answer is -5 26 9 -60, so C

-3x+2y=10 -4+3y=2 the answer will be -26 -34, so A.

I'm tired so the answer are is this order for me. 1. C 2. C 3.A 4. A 5.C

QueenT is correct 👌

QueenT is right !

1. C 2. C 3.A 4. A 5.C

FOR CONNEXUS. 100% CORRECT

Thank you for verifying the answers!

Assuming you mean matrices and not determinants, take a look at

http://www.wolframalpha.com/input/?i={{9%2C4}%2C{2%2C1}}+*+{{-9%2C-6}%2C{-1%2C-8}}

The result is not one of your answers, so there's a typo somewhere. You can easily adjust the numbers on that web page, till things turn out right.

To find the solution of the matrix equation, you need to perform matrix multiplication.

The matrix equation is given as:

|9 4| |-9 -6|
| | X =| |
|2 1| |-1 -8|

To solve this, you need to multiply the left matrix by the right matrix. The result will be the solution matrix.

So, let's perform the multiplication:

9 * -9 + 4 * -1 = -81 + (-4) = -85
9 * (-6) + 4 * (-8) = -54 + (-32) = -86

2 * -9 + 1 * -1 = -18 + (-1) = -19
2 * (-6) + 1 * (-8) = -12 + (-8) = -20

Therefore, the solution matrix is:

|-85 -86|
|-19 -20|

Comparing this with the given options, we see that the solution matrix matches option C:

|-5 26|
|9 -60|

So, the correct answer is C.