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Kryger [21]
4 years ago
12

The image shows parallel lines cut by a transversal. The expressions represent unknown angle measurements. What is the value of

x?
a)5
b)7
c)9
d)11

Mathematics
1 answer:
kkurt [141]4 years ago
7 0
Letter b
Angles are supplementary ( the sum of both angles =180)
11x + 8 + 12x +11 = 180
23 x = 180 - 19
23x -= 161
X = 7
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Answer:

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(9x - 24)° + (12x - 6)°  = 180°\\21x° - 30° = 180° \\ 21 x° = 180°  +  30° \\ 21x° = 210° \\ x° =  \frac{180°}{30°}  \\ x° = 10°

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