His sister saved about 18.4 meters by swimming across the lake
Answer:
Both are related as both have the answer same that is x=2.
Answer:
(n-2) × 180°
Step-by-step explanation:
Sum of interior angles for a polygon = (n-2) × 180°
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you have found is yourself!
You want to put this in the form (x+b)^2 + c
To do this take half of the coefficient of b from the ordinal form which is 6/2=3 as use this as your new b
This give you (x+3)^2.
If you foil this out you get x^2 +6x +9 so you have added 9 to the original expression so now all you need to do is subtract 9 to keep things balanced
The final expression then is (x+3)^2 -9
<u> So c= -9</u>