Pls answer with working out

Mathematics

1 answer:

Vanyuwa [196]3 years ago

4 0

It is a pentagon so the sum of the angles is 520, therefore:
75+140+2x+5x+3x+5=520
80+140+2x+5x+3x=520
220+2x+5x+3x=520
2x+5x+3x=300
10x=300
x=30

Hope this helps :)

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