Introduce slack variables as necessary, and write the initial simplex tableau for the problem.Find x ? 0 and y ? 0 such that2x + 5y ? 153x + 3y ? 19 and 4x + y is maximized. 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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The question(s) that follow refer to the problem of finding the minimum spanning tree for the weighted network shown below.
Using Kruskal's algorithm, which edge should we choose last?
A. BC B. AB C. AC D. CD E. none of these
Mathematics
Decide whether the relation is a function.{(-6, 7), (-1, 4), (3, 7), (8, -4)}
A. function B. not a function
Mathematics
Solve.x + y + z = 6x - z = -2 y + 3z = 11
A. (1, 2, 3) B. (-1, 2, -3) C. (3, -2, 5) D. (0, 4, 2)
Mathematics
Determine whether the equation is a function.x = y2
A. function B. not a function
Mathematics