Charlotte earned a grade of 84% on her multiple-choice math final that had a total of 200 problems. How many problems on the fin
1 answer:
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Answer:
For it will be plus or minus
For it will be plus or minus
Step-by-step explanation:
Well for it will be 5i
Because i = -1
<h3>Answer:</h3>
(x, y) = (7, -5)
<h3>Step-by-step explanation:</h3>It generally works well to follow directions.
The matrix of coefficients is ...
Its inverse is the transpose of the cofactor matrix, divided by the determinant. That is ...
So the solution is the product of this and the vector of constants [-6, -50]. That product is ...
... x = (3·(-6) +(-4)(-50))/26 = 7
... y = (5·(-6) +2·(-50))/26 = -5
The solution using inverse matrices is ...
... (x, y) = (7, -5)