Perform the indicated operation. Write the result in standard form.(9 + 8i) - (-8 - 8i) - (-4 - 2i)

A. 21 - 2i
B. 21 + 18i
C. -3 - 2i
D. 13 + 14i

Answer: B

Mathematics

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A.  = cscn-2 x cot x - 
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C.  = cscn-2 x cot x + (n - 2) 
D.  = cscn-2 x cot x -  

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A. 2y - 3x = 2 B. 2x - 3y = 2 C. 2x - 3y = 4 D. 2y - 3x = 4

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Solve.The following test scores were recorded for a student: 79, 74, 72, 68, 74, 60, 70. Find the median test score.

A. 71 B. 74 C. 72 D. 68

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Use mathematical induction to prove the statement is true for all positive integers n.12 + 42 + 72 + . . . + (3n - 2)2 = 

What will be an ideal response?

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Mathematics