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Semmy [17]
3 years ago
15

Help Due asap Show workings

Mathematics
2 answers:
frutty [35]3 years ago
8 0

-- these are called same side exterior angles, which means they are supplementary.

x + 9 + 2x + 6 = 180

3x + 15 = 180

3x = 165

x = 55

so, option B.

Lelechka [254]3 years ago
4 0

x=3

Step-by-step explanation:

(x+9)°=(2x+6)°(by alternate exterior angle)

9-6=2x-x

3=x

check

(x+9)°=(2x+6)°

put value

3+9=2×3+6

12=12

LHS = RHS

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