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 third?
A. AB
B. AE
C. GH
D. BG
E. none of these
Answer: B
Mathematics
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Find the derivative.y = 9x2e-x
A. 9xe-x(x + 2) B. 18xe-x(1 - x) C. 9xex(2 - x) D. 9xe-x(2 - x)
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Convert the mixed number into an improper fraction.-2
A. - 
B. - 
C. - 
D. - 
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Find the exact value of the indicated trigonometric function of ?.csc ? = - 
, ? in quadrant IIIFind cot ?.
A. - 
B. 
C. - 
D. - 
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The demand equation for the Roland portable hair dryer is given by 
, where x (measured in units of a hundred) is the quantity demanded per week and p is the unit price in dollars. When is the demand unitary? (Hint: Solve 
for p).
?
A. 
B. 
C. 
D. 
E. 
Mathematics