Answer:

Step-by-step explanation:
The expression is for the interior angle of the hexagon; one interior angle is equal to
.
Since an interior angle of a hexagon measures 120°, we have the equality
.
Now it is just a matter of solving for 

The number of pounds of copper in 120 pounds of brass is = 78 pounds of copper
<h3>Calculation of number of pounds of copper</h3>
The percentage of copper in the brass = 65%
Therefore the quantity of copper in the brass = 65/100= 0.65 pounds
This means that 1 pound brass contains = 0.65 pounds of copper
The quantity of copper in 120 pounds of brass = 120 * 0.65
= 78 pounds of copper.
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Answer:
middle a little to the left and done
Step-by-step explanation:
Answer:
11 and 6
Step-by-step explanation:
11-6=5 <--- difference
11+6=17 <--- sum
Answer:
Step-by-step explanation:
look at the pictures. they should help.
when you have a triangle and you are trying to find the exterior angle you need to find the interior angle that is opposite of the exterior angle. they should both add up to 180 because it will be on a straight line. what ever numbers you have left should be for both angles.