Tamara finds the sum of two number cubes rolled at the same time. The chart below shows all possible sums from the 36 possible c
ombinations when rolling two numbers cubes. How many times should Tamara expect the sum of two cubes be equal to nine if she rolls the two number cubes 252 times
1 answer:
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Answer:
7 of the angles measure 144 degrees each and one angle measures 72 degrees
Step-by-step explanation:
Let
x -----> represent the measures of the seven same-size angles,
x/2 ----> represent the measure of the one that is "two times smaller."
we know that
The sum of internal angles of a polygon can be calculated as:
where
n is the number of sides of the polygon
In this case
n=8 (octagon)
substitute
so
The linear equation that represent this problem is
solve for x
so
therefore
7 of the angles measure 144 degrees each and one angle measures 72 degrees