Simplify.21 + 86i2
A. 107
B. 21 - 86i
C. 21 + 86i
D. -65
Answer: D
Mathematics
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Determine the letters or numbers.Translate the word "COUCH" into an ASCII string of binary digits.
A. 10000111001111101010110000111001000 B. 11000111101111111010110001111101000 C. 11000111101101111010111100111101010 D. 10111001100110011011101111000110011
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Find the difference.16.891 - 3.407
A. 13.684 B. 20.298 C. 13.584 D. 13.484
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Provide an appropriate response.If X has density function f(x) = 
find k.
A. 1
B. 
C. 6
D. 
E. 0
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Find the domain of the function.h(x) = 
A. all real numbers B. {x|x ? 2} C. {x|x ? 0} D. {x|x ? -8, 0, 8}
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