
Notice that

which means the series is divergent. So if this is one of those "select all that apply" questions, then both (c) and (j) are the only choices that do.
N = 4 + x? i think, im not really sure but im pretty sure it is
Step-by-step explanation:
- ABCD parallellogram
- m< B = m< D = 40
- in triangle ACD :
m < CAD = 180 - ( 40 + 57 ) = 83
You can group first two conjunctions and second two:

.
In first brackets you have common

and in second brackets common is 5:

.