Answer:
x = 10
Step-by-step explanation:
28/20 = 1.4
4x+2/3x = 1.4
4x+2/3x = 14/10
40x+20 = 42x
40x-42x = -20
-2x = -20
-x = -20/2
-x = -10
Answer: 2.9 inches
<u>Step-by-step explanation:</u>
a
A heptagon is a polygon.
It has 7 sides
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