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samantha9430
11.03.2021 •
Mathematics
HELP PLZ doesn’t have to be all of them ASAP thanks :)
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Ответ:
Hello, there
Given that,
80°,3x° and 2x°are three angles on a st.line.
we have,
2x°+3x°+80°= 180° {The total sum of angles on a st. line is 180°}.
or, 5x°= 180°-80°
or, 5x°=100°
or, x= 100°/5
Therefore the value of x is 20°.
Hope it helps...