20,025 I think because it’s says how much and how much means to add so that’s why I say 20,025
You need to simplify so one-fifth would be 3/15 and 2/3 would be 10/15 so you need to add that together and it would be 13/15
Answer:

Step-by-step explanation:
Using Cosine Rule

Where a = 11 , b = 7 and C = 110


Taking sqrt on both sides
c = 14.9
There is no table, so it is not a complete question
Answer:
I'm not to sure of this answer