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22 May 2020, 04:40
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C
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Difficulty:
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Question Stats:
89% (00:37) correct
11%
(00:44)
wrong
based on 155
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In the figure above, what is the value of x ?
A. 50
B. 70
C. 80
D. 90
E. 100
PS21152
Attachment:
21152-0.png [ 3.11 KiB | Viewed 4781 times ]
22 May 2020, 05:45
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Bunuel
\((n-2)*180= \)
\((4-2)*180= 360\)
\(360 - 260 = 100\)
\(100+x°=180\)
\(x=80\)
Answer C
22 May 2020, 06:05
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Bunuel
Since angles in a quadrilateral must add to 360°, we know that the missing angle = 100°
Next, since angles on a line must add to 180°, we can write: 100° + x° = 180
Solve to get: x° = 80
Answer: C
Cheers,
Brent
