178
You add 85cm plus 258cm plus 13cm then you get the answer divide it by 2 you get
178cm
3.2% per year
Hoping that helps :)
Answer: 
Step-by-step explanation:
It is important to remember the following:

In this case you can observe in the figure that "x" is an Angle formed by two chords, therefore, you can find its value applying the formula.
Therefore, the value of "x" is this:

Answer: -25
Step-by-step explanation: