Answer:
The ordered pair that contains the solution to the equation lies in Quadrant I.
The solution to the equation is x=2
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Multiply 2/3 by 8 and you will get 16/3 or 5.33 repeating.
1/6 pound of chocolate for each person ( 1/2 / 3 ).
The data is a little bit complex,but you can use the knowledge of vector in the subject of algebra,or you can ultimate the basic Euclidean knowledge,like cosine theorem.In detail,you can list two equation with two variable,and get the answer.but i don't finish calculating it.