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timofeeve [1]
3 years ago
13

Helllllllpppppp me plz

Mathematics
2 answers:
Genrish500 [490]3 years ago
5 0

Answer:

90 degrees

Step-by-step explanation:

liberstina [14]3 years ago
4 0

Answer:

x=103

Step-by-step explanation:

sum=(n-2)*180

sum=(6-2)*180

sum=4*180

sum=720

90+155+112+120+140+x=720

617+x=720

x=720-617

x=103

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