Solve the equation.x2 + 4x + 8 = 0
A. {-2 - 2i, -2 + 2i}
B. {0, -4}
C. {2 - 2i, 2 + 2i}
D. 
Answer: A
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Use the mileage chart shown below to find the minimum spanning tree for the 6 cities of Atlanta, Dallas, Denver, Houston, Kansas City, and Memphis.
Using Kruskal's algorithm which edge is chosen third?
A. Kansas City - Denver. B. Memphis - Atlanta. C. Memphis - Dallas. D. Kansas City - Memphis. E. none of these
Write the set as indicated.Write {17, 18, 19, 20} using set-builder notation.
A. {x?x is a natural number between 16 and 21} B. {17, 18, 19, 20} C. {x?x is a natural number less than 21} D. {x?x is a natural number between 17 and 20}
Find the square of the radical expression.
A. 
B. 
C. - 
D. 
Solve the problem.The correlation between respiratory rate and body mass in the first three years of life can be expressed by the function log R(w) = 1.81 - 0.34 log (w),where w is the body weight (in kg) and R(w) is the respiratory rate (in breaths per minute). Find R'(w) using implicit differentiation.
A. R'(w) = -21.95w-1.34 B. R'(w) = 64.57w-1.34 C. R'(w) = -21.95w-0.66 D. R'(w) = -21.95w-0.34