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Reika [66]
3 years ago
10

Someone help me in 4th question plz

Mathematics
1 answer:
liubo4ka [24]3 years ago
5 0
So we should basically add 70,80,m+10

=70+80+m+10=180(PQR is a straight line)
=150+m+10=180
=m+10=180-150
=m+10=30
=m=30-10
Therefore m=20degrees
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