Posted by lizzie on Friday, August 12, 2011 at 6:25pm.
1.
What do you want to do to it? Find the determinant?
If so
(1/2)(-8) - (14)(10)
= -4 -140
= -144
2.
2*7 = 14
Is this right then?
|12 -21
-2 -2/3|
answer-1/50
| 12 -21 |
| -2 -2/3|
12(-2/3) -(-21*-2)
= -8 - 42
= -50
What about this one? Correct?
|1 0
0 1|
The answer would be 1
Yes.
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