In a certain city there is a river running through the middle of the city. There are three islands and seven bridges as shown in the figure below.
In the graph that models this situation, the degree of the vertex that represents island B is
A. 2.
B. 1.
C. 4.
D. 3.
E. none of these
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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Simplify.
A. 
B. 
C. 
D. 
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Provide an appropriate response.What is wrong with the following problem? Explain and correct the error. 
What will be an ideal response?
Mathematics
Solve the system of equations using Cramer's rule. 8x - 3y + 6z = 65 2x + 7y - 5z = -158x - 2y + 2z = 42
A. (1, 6, 1) B. (4, 1, 6) C. (5, -1, 6) D. (4, -1, -6)
Mathematics