Express the indicated roots of unity in standard form a + bi.Seventh roots of unity
A. 1 + 0i
cos 
+ i sin 
? 0.62 + 0.78 i
cos 
+ i sin 
? - 0.22 + 0.97 i
cos 
+ i sin 
? - 0.90 + 0.43 i
cos 
+ i sin 
? - 0.90 - 0.43 i
cos 
+ i sin 
? - 0.22 - 0.97 i
cos 
+ i sin 
? 0.62 - 0.78 i
0 - i
B. 1 + 0i
cos 
+ i sin 
? 0.90 + 0.43 i
cos 
+ i sin 
? 0.62 + 0.78 i
cos 
+ i sin 
? 0.22 + 0.97 i
cos 
+ i sin 
? - 0.22 + 0.97 i
cos 
+ i sin 
? - 0.62 + 0.78 i
cos 
+ i sin 
? - 0.90 + 0.43 i
C. 1 + 0i
cos 
+ i sin 
? 0.62 + 0.78 i
cos 
+ i sin 
? - 0.22 + 0.97 i
cos 
+ i sin 
? - 0.90 + 0.43 i
cos 
+ i sin 
? - 0.90 - 0.43 i
cos 
+ i sin 
? - 0.22 - 0.97 i
cos 
+ i sin 
? 0.62 - 0.78 i
D. 1 + 0i
cos 
+ i sin 
? 0.62 + 0.78 i
cos 
+ i sin 
? - 0.22 + 0.97 i
cos 
+ i sin 
? - 0.90 + 0.43 i
cos 
+ i sin 
? - 0.90 - 0.43 i
cos 
+ i sin 
? - 0.22 - 0.97 i
1 - i
Answer: C
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A. y - 3 = 0 B. x + 3 = 0 C. y + 3 = 0 D. x - 3 = 0
Solve the problem.Suppose that during a certain step in a chemical manufacturing process the amount of hydrogen sulfide dissolved in a solution, measured in parts per million (ppm), is related to the elapsed time measured from the beginning of the step. Use the following table as a representation of this relationship. Write the data from the table as ordered pairs (x, y), where x represents the time and y represents the amount dissolved.
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A. True B. False