Find the sum of the series.
A. 66
B. 86
C. 35
D. 93
Answer: A
Mathematics
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Simplify. Write your answer in the form a + bi, where a and b are real numbers.(-6 - 6i) - (7 - i)
A. -13 + 5i B. -13 - 5i C. -13 - 6i D. 13 + 5i
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Find the moment or center of mass of the wire, as indicated.Find the center of mass of a wire of constant density that lies along the first-quadrant portion of the circle 
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 0, 
= 
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Answer the given question.Where are all points whose coordinates have the same sign?
A. In first or second quadrant B. In third or fourth quadrant C. In second or fourth quadrant D. In first or third quadrant
Mathematics
Factor out the greatest common factor.6x3 + 4x2 - 2x
A. 2x(3x2 + 2x - 2) B. 2(3x3 + 2x2 - x) C. 2x(3x2 + 2x + 1) D. 2x(3x2 + 2x - 1)
Mathematics