Question

In the diagram below, find the value of y
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Answer 1

130

Explanation:

Answer 2

y = 130°

Explanation:

4x + 8 + x + 7 + 3x - 19 = 180 (all angles in a triangle add upto 180)

8x = 184

x = 23°

3x - 19 + y = 180 (supplementary = 180)

sub x = 23 into equation

50 + y = 180

y = 130°