Simplify by using the properties of complex numbers.(8 - 4i)(4 + 7i)
A. 60 - 40i
B. 72 + 4i
C. 4 - 72i
D. 60+ 40i
Answer: D
Mathematics
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A. 
B. 
C. 
D. 
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Write an equation for the parabola.
points: (3, -2), (7, -4)
A. (x + 2)2 = 8(y - 3) B. (y - 3)2 = -8(x + 2) C. (x - 2)2 = -8(y + 3) D. (x - 3)2 = -8(y + 2)
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Use an inverse trigonometric function to write ? as a function of x.
?
?
a = x + 6
b = 2
?
A. 
B. 
C. 
D. 
E. 
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Solve.xy - y2 = 49xy - 10y2 = 0
A. 
, 
B. 
, 
C. 
, 
D. 
, 
Mathematics