Sorry im only in middle school i dont know this
Answer:
6
Step-by-step explanation:
Octagon - 135 degrees
Decagon - 144 degrees
135 / 144 * 100% = 93.75%
Therefore it is 6.25% less
source 1728.com/polygon.htm
Can you take a picture so I can see it
<span>834 + 14s > 978 - 10s
Start by getting all the s on to the left side...
Add both sides by 10s
834 + 24s > 978
Subtract by sides by 834...
24s > 144
Divide both sides by 24 to get s by its self...
s > 6 is the answer</span>