Question

http://gyazo.com/d2ee48e2a49cde44caedf73d349c9b98

Answer 1

Any idea?

Answer 2

B but thats just a guess

Answer 3

Hello @masonman and Thank you for asking a Qualified Helper Question :)

The inverse of a 2 by 2 matrix can be depicted as

Answer 4

So would it be D

Answer 5

So in this case,
a = 5
b = 7
c = 3 and
d = -10

Can you plug it into what I drew to the right? :)
(don't forget the fraction)

Answer 6

can I see a worked solution

Answer 7

\[\frac{ 1 }{ ad-bc } \left[\begin{matrix}d & -b \\ -c & a\end{matrix}\right]\]Can you plug in
a = 5
b = 7
c = 3 and
d = -10
into the format I gave? :)

Answer 8

ill do it later nevermind

Answer 9

dont feel like doing this now lol

Answer 10

That's ok ^_^ If you would like to continue this question later whenever, just tag me and I'll to my best to help :)