One of the main reasons why primary sources are valuable to historians is because "<span>They give insight into the thoughts and feelings of a participant in history," since these are sources that originated during the time in question, and are "unaltered". </span>
Airplanes,mail delivery, revolution in printing, and photography improved if
Answer:
Can you be a little more specific?
Explanation:
I dont understand.
Answer:
James Madison was the 4th president
Explanation:
I know this because I searched the order of presidents from the first to now the 4th one one James Madison. I hope that this helped you! :)
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 
