Identify the complex number as real or imaginary.i
A. Imaginary
B. Real
Answer: A
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Ions are atoms or groups of atoms with positive or negative electrical charges. The charges of some ions are given. Use these values to find the total charge. 
13 borate and 9 hydroxide
A. +30 B. -40 C. -30 D. -48
The following table contains information about moons orbiting a planet named Geo I. Use the table to solve the problem.
Which moon has a diameter of 310 kilometers?
A. Luna 2 B. Luna 1 C. Luna 4 D. Luna 3
Find the foci of the ellipse whose equation is given.36(x - 1)2 + 25(y - 3)2 = 900
A. foci at (-1, 3 - 
) and (-1, 3 + 
)
B. foci at (1, 3 - 
) and (1, 3 + 
)
C. foci at (2, 3 - 
) and (2, 3 + 
)
D. foci at (3, 1 - 
) and (3, 1 + 
)
The polar coordinates of a point are given. Find the rectangular coordinates of the point.(-3, -135°)
A. 
B. 
C. 
D. 