Posted by **lizzie** on Tuesday, August 9, 2011 at 4:06pm.

Can you tell me if these are correct? I am not sure that I understand this.

1. Which is the solution for the determinant?

|10 0)|

5 -7

Answer- -70?

2.Which is the solution for the determinant?

|1 7)|

0 -3

Answer- -3

- Algebra -
**lizzie**, Tuesday, August 9, 2011 at 4:13pm
Did I answer these correct?

19.Given matrices A, B, and C are all 2x2, determine whether the equation is true for the given matrices.

C(A+B)= CA + CB

Answer- False

20.Matrix multiplication is not commutative.

Answer-False

21.For matrices, A + B = B + A

Answer-True

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