Arlo is making a sandwich. He will choose one type of bread, one type of meat, and one type of cheese. His choices for bread are
wheat (W)
and rye (R). His choices for meat are turkey (T) and ham (H). His choices for cheese are cheddar (C) and swiss (S).
Which tree diagram shows all the possible sandwich combinations?
Pls help
and rye (R). His choices for meat are turkey (T) and ham (H). His choices for cheese are cheddar (C) and swiss (S).
Which tree diagram shows all the possible sandwich combinations?
Pls help
1 answer:
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<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)