Find the product and write the result in standard form.(2 - 4i)(-4 - 6i)
A. 16 + 4i
B. 16 - 28i
C. -32 + 4i
D. -32 - 28i
Answer: C
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Write as a percent.8.144
A. 8.144% B. 0.08144% C. 814.4% D. 0.8144%
Rewrite with only sin x and cos x.sin 3x + cos 3x
A. sin x cos2x - sin3x + cos3x - sin2x cos x B. 2 sin x cos2x + sin3x - cos3x - 2 sin2x cos x C. 2 sin x cos2 x + cos x + 1 - sin2 x + cos x D. 2 cos2x sin x + sin x - 2 sin3x + cos x - 4 cos x sin2x
Find an equation of variation for the given situation.y varies jointly as x and z and inversely as w , and y = 
when 
and 
A. y = 
xzw
B. y = 3xzw
C. y = 
D. y = 
?A polyhedron is semi-regular if which of the following is true?
A. ?All of its faces are different polygons B. ?All of its faces are regular polygons, and all vertices are constructed with these same faces. C. ?All of its faces are irregular polygons, and all vertices are constructed with these same faces. D. ?Often called a Platonic Solid. E. ?a and b are true.