Solve the problem.After the eulerization of a graph, the number of even vertices is
A. not possible to determine without knowing the specific graph.
B. the same as the number of odd vertices before the eulerization.
C. 0.
D. 2.
E. the same as the number of even vertices before the eulerization.
Answer: A
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Use the distributive property to simplify.-(6x - 3)
A. 18x B. -6x - 3 C. 6x - 3 D. -6x + 3
Solve the equation. Express irrational answers in exact form and as a decimal rounded to 3 decimal places.
x = 71 - x
A. 
? 1.553
B. ln 
- ln 7 ? -2.639
C. 
? 0.644
D. 
? 0.792
Rotate the axes so that the new equation contains no xy-term. Discuss the new equation.31x2 + 10
xy + 21y2 -144 = 0
A. ? = 36.9°
+ 
= 1
ellipse
center at (0, 0)
major axis is x'-axis
vertices at (±3, 0)
B. ? = 45°
y'2 = -4
x'
parabola
vertex at (0, 0)
focus at (-
, 0)
C. ? = 45°
x'2 = -4
y'
parabola
vertex at (0, 0)
focus at (0, -
)
D. ? = 30°
+ 
= 1
ellipse
center at (0, 0)
major axis is y'-axis
vertices at (0, ±3)
Find the real numbers x and y.-1.1 + 2yi = x - 5.5 - 2.2i
A. x = 7.7, y = 0.6 B. x = -1.1, y = -2.2 C. x = -1.1, y = -3.8 D. x = 4.4, y = -1.1