Question

Can someone help me with this. Im have no idea what to do.
http://prntscr.com/129f4d

Answer 1

D.

Answer 2

The 1 next to a means which row it is in. The 2 is the column.

Answer 3

Thanks so much!

Answer 4

No problem!

Answer 5

Your the best

Answer 6

I'd be glad to help you with anything else! I Love Matrices.

Answer 7

There is one more I got wrong on this section

Answer 8

Post it.

Answer 9

http://prntscr.com/129gqo

Answer 10

and I have a small question on another one. Im able to do it if i figure out how to complete it lol

Answer 11

The answer is -60.

Answer 12

Extend the determinant's grid by rewriting the first two columns of numbers:
Then multiply along the down-diagonals:
...and along the up-diagonals
You get
Down: -3*0*1 5*-3*3 2*3*0
Up: 3*0*2 0*-3*-3 1*3*5
(0)+(-45)+(0)-(0)-(0)-(15)=-45-15=-60

Answer 13

Oh! Yes I do! Thank you. very informative.