3/10+6/100+2/1000 that is my answer your welcome;)
Answer:
B
Step-by-step explanation:
The sum of the measures of the angles of a polygon is given by (<em>n</em> - 2)(180), where <em>n</em> is the number of sides. In this case we would have (9-2)(180)=7(180)=1260. This is the <u>sum</u> of the angles. Since it is a regular nonagon, that means that all sides are congruent and all angles are congruent. Therefore we find the measure of each individual angle by dividing the sum, 1260, by the number of sides, 9. 1260/9=140. <em>x</em> forms a linear pair with one of the interior angles; that means that the interior angle, 140, added to <em>x</em> would give us 180. Therefore we find <em>x</em> by subtracting 180-140. <em>x</em> = 40.
For this case we have the following conversion:
![1 km = 1000m](https://tex.z-dn.net/?f=%201%20km%20%3D%201000m%20%20)
Therefore, for 20 kilometers we have:
![(20) (1000) = 20000 m](https://tex.z-dn.net/?f=%20%2820%29%20%281000%29%20%3D%2020000%20m%20%20)
Then, we have the following relationship:
![800 + x = 20000](https://tex.z-dn.net/?f=%20800%20%2B%20x%20%3D%2020000%20%20)
Where,
x: distance Bob travels by bicycle
Clearing x we have:
![x = 20000 - 800\\x = 19200](https://tex.z-dn.net/?f=%20x%20%3D%2020000%20-%20800%5C%5Cx%20%3D%2019200%20%20)
Then, the percentage that Bob travels by bicycle is:
%
Answer:
The percentage that Bob travels in bicycle is 96%.