<h3>
Answer: a = 100</h3>
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Explanation:
There are n = 7 sides to this polygon (so it's a heptagon)
The interior angles add up to 180(n-2) = 180*(7-2) = 900 degrees.
So that means,
69+284+62+62+242+81+a = 900
800+a = 900
a = 900-800
a = 100
<u>Answer:</u>
- 40% of the total marbles are green.
<u>Step-by-step explanation:</u>
Percentage: Green marbles/Total marbles
- => 8/5 + 4 + 8 + 3
- => 8/20
<u>Percentage formula:</u> 
<u />
- => 8/20 x 100
- => 8 x 5
- => 40
Hence, 40% of the total marbles are green.
Hoped this helped.
Here is answer in the picture I hope this will help to you
D'
you can't use the same single letter to mark a new point.
Answer:
Division is not associative.
The associative property applies only to addition and multiplication, not subtraction or division.
