We will follow this strategy: we will find the value of x using a theorem about the sum of interior angles of any polygon, and then we will compute 2x to find A.
The theorem states that the sum of the interior angles of <em>any</em> polygon with
sides is 
Your polygon has seven sides (so
), and the sum of the interior angles is

So, using the theorem, we know that
.
Since
and
, we have 
Answer:
Irrigation is not used in the Midwest i am learning that to
Explanation:
World War I. Main article: U-boat Campaign (World War I)
See also: Mediterranean U-boat Campaign (World War I)
<span>Submarine warfare in World War I was primarily a fight between </span>German<span> and Austro-Hungarian U-boats and Atlantic supply convoys bound for the </span>United Kingdom<span>, </span>France<span>, and </span>Russia<span>.</span>