All the angles of a triangle equal 180. 101+33=144. 180-144=36. k=36
E) 12 minutes
A normal curve has approximately 95% of graph between mean - 2sd and mean + 2sd
So 95% of the times will be between 0 and 12 minutes. 6 - 2x3 to 6 + 2x3
2.5% will take over 12 minutes
Strangely 2.5% will also take less than 0 minutes to process which shows the normal curve is not perfect in this example.
The answer is choice D because if you combine the like terms, you get 15-23i
i hope that helps!!!!
