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31 votes
31 votes
SOMEONE PLEASE HELLPPPP

SOMEONE PLEASE HELLPPPP-example-1
User Huu Phuong Vu
by
2.9k points

1 Answer

19 votes
19 votes

Answer:

93.39

Explanation:

So the sum of exterior angles of the convex octagon is: 360 degrees

This means if we add all the equations that represent each angle, we can set it equal to 360 and solve for x


(x+14) + (2x-3) + (3x+8) + (3x+16) + (2x-17) + (3x-4) + (3x-12) + (6x)

Group like terms


(x+2x+3x+3x+2x+3x+3x+6x) + (14-3+8+16-17-4-12)

Add like terms


23x+2

Now let's set the sum of exterior angles to 360


23x+2 = 360

Subtract 2 from both sides


23x=358

Divide both sides by 23


x\approx 15.565

So by looking at all these, it appears that 6x is the highest value, given that x is positive. The way I estimated, is approximately 15.5, whenever I saw an equation like x+14, I estimated it's about 2x, since 14 is not exactly, but close to 15.5. I did this with each polynomial given. You could also manually check each one

Original equation

6x

Subsitute

6(15.565)

Simplify


93.39

User Hugh Guiney
by
3.0k points