Solve.x2 + 4x + 4 ? 0
A. {-2}
B. {2}
C. [2, ?)
D. (-?, -2] ? [-2, ?)
Answer: A
Mathematics
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Use a calculator to approximate the number. (Round your answer to three decimal places.)
A. -3.176 B. 11162.377 C. -11159.051 D. -3.970 E. 5.548
Mathematics
Subtract. Use borrowing, if necessary.
A. 54,895 B. 45,889 C. 45,789 D. 45,895
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Draw and shade a Venn diagram that corresponds to the set.A ? (B ? 
)
A. 
B. 
Mathematics
Solve the problem.Suppose G is a graph with 39 vertices and 38 edges. Then
A. G is either a tree or it is not connected. B. G must be a tree. C. G cannot have any circuits. D. G cannot have more than one path joining any two vertices. E. none of these
Mathematics