I would say c because FE is a radius BA i think is a chord and EC isn't even a line
Answer:
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Step-by-step explanation:
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Answer:
a + b + c + d + e = 180.
Step-by-step explanation:
We can prove that a = angle CBA (vertically opposite angles are equal).
Now, since lines DE and CA are parallel, then it follows that c = angle ACE (alternate angles are equal). Similarly, b = angle CAD.
But notice that what we've just done is found the angles of the triangle CBA.
So the sum of the angles (a + b + c + d + e) is the sum of the angles of a triangle.
We then conclude that a + b + c + d + e = 180 degrees.
3x-21=6x-60
3x+39=6x
39=3x
x=13
$16 because 80%* 20= 16 hope this helped
