N represents the number of payment periods. Supposing you arranged for a mortgage to buy a house; you'd have to make n payments of so many dollars per month to pay off the mortgage (the total amount due,with interest).
If the annual interest rate were r, and payments were due monthly (12 payments per year), then the monthly interest rate would be r/n = r/12. The typical 30-year mortgage involves monthly payments over a 30 year time span. This comes to 360 monthly mortgage payments.
You did everything correctly! I did it myself...all of your subtraction is correct, then I added the answers together and I got 51. Where you trying to get another answer?
You could easily find the outcome of each point then add them up for the MNK
Answer:
The perimeter is equal to 
Step-by-step explanation:
we have that

The perimeter of triangle ABC is equal to

the formula to calculate the distance between two points is equal to
step 1
Find the distance AB

step 2
Find the distance BC

step 3
Find the distance AC

step 4
Find the perimeter

D. DOQ & BOQ together equals 90 degrees