Simplify the following using complex conjugate:

4 + i / 2 - 6i

Determine whether the samples are independent or dependent. upper a data set includes the morning and evening temperature for the lasta data set includes the morning and evening temperature for the last 90 days.90 days.

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Find the pattern and use it to list the nth term in the sequence. 6, 12, 20, 30, 42, 56, the nth term of the sequence is