20. Find the value of x.
А
60°
40°
3r-1°
C
B
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Answered by
1
Answer:
the answer is 80
Step-by-step explanation:
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Answered by
0
Answer:
60 + 40 +3x-1 =180 degree
Step-by-step explanation:
100+3x-1=180
3x-1=80
3x=81
x=81/3
x=27
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