Question

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Answer 1

5)

50 + x = 180

x = 180 - 50

x = 130°

6)

80 + x = 180

x = 180 - 80

x = 100°

7)

30 + x + 50 = 180

80 + x = 180

x = 180 - 80

x = 100°

8)

35 + x = 180

x = 180 - 35

x = 145°

9)

x + 60 + 70 + x = 360

2x + 130 = 360

2x = 360 - 130

2x = 230

x = 230/2

x = 65°

10)