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1 answer:
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Answer:
\frac{1}{2} \left[\begin{array}{ccc}16&6&2\\20&8&2\\7&3&1\end{array}\right]
Step-by-step explanation:
Given is a matrix 3x3 as
|A| =2 hence inverse exists.
Cofactors are 16 20 7
6 8 3
2 2 1
Hence inverse =
So for the first problem;
You will take the cost of the glue $2.39 and take away the cost of the tape. Which is $1.99
So the answer to problem 1. will be $0.40 more.
For the second problem;
We will add the cost of the markers together, then add the cost of the paper onto that.
Leaving the second answer to be $12.39.
You will take the cost of the glue $2.39 and take away the cost of the tape. Which is $1.99
So the answer to problem 1. will be $0.40 more.
For the second problem;
We will add the cost of the markers together, then add the cost of the paper onto that.
Leaving the second answer to be $12.39.