Question

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Answer 1

Answer:

a = 40 '

Step-by-step explanation:

As we know sum of all exterior angle of polygon is 360 ',

Exterior angles are,

140

180 - 30 = 150

a

a + 140 + 150 = 360 '

a = 360 - 290

= 40 '

Answer 2

Step-by-step explanation:

1) 70

2)x=150

y=30

3) 30 kg