The perimeter of the a and BC is 14 unitsBecause if you add all of the sides together you get 14 and I need points
Answer:

Step-by-step explanation:
we know that
The formula of law of cosines is equal to

where
a, b and c are sides. C is the angle opposite side c
In this problem we have

substitute the given values






Answer:
x = 50, y = 10
Step-by-step explanation:

Answer:145
Step-by-step explanation:1+3400÷64+2/4-65%