3 years ago

Calculate the value of x

Mathematics

2 answers:

OleMash [197]3 years ago

8 0

Answer:

12x=180 -30

x= 150/12

x= 12.5°

Marrrta [24]3 years ago

8 0

Answer:

x = 12.5

Step-by-step explanation:

The 3 angles lie on a straight line and so sum to 180°, that is

x + 10 + 10x + x + 20 = 180, simplify

12x + 30 = 180 ( subtract 30 from both sides )

12x = 150 ( divide both sides by 12 )

x = 12.5

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