Show that in a group of 10 people (where any two people are either friends or enemies), there are either three mutual friends or four mutual enemies, and there are either three mutual enemies or four mutual friends'.
In a group of 6 people there are either 3 mutual friends or 3
mutual enemies.

Let be a person from a group of 10

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

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step-by-step explanation:

yeah i know the problem you need. i am taking it right now. the answer is step 3

~mickey