Answer:
x=44 degree
Explanation:
half of the circle is equal to 180 degree which is AB
therefore; 3X+5+X-1 =180
3X+X+4=180
4X+4=180
X+1= 45
x = 44
3x+5 and x-1 for a straight line
They add to 180
3x+5 + x-1 = 180
Combine like terms
4x +4 = 180
Subtract 4 from each side
4x+4-4= 180-4
4x =176
Divide each side by 4
4x/4 = 176/4
x =44
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