Answer:

Step-by-step explanation:
Given

Required
Evaluate when n = 12
Substitute 12 for n in 

Simplify the fraction


Answer:
It would be 5.
Step-by-step explanation:
Hope this help!
Answer:
256 degrees.
Step-by-step explanation:
The figure is a parallelogram so m < 1 = 180-52 = 128 degrees (same side angles).
Also m < 2 = m < 1 (opposite angles of a parallelogram), so their sum is 2*128
= 256 degrees.
You can do C(6,2) which gives

which is
15!