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astra-53 [7]
3 years ago
13

− 1 ​ + −81 ​ − 16 ​ − −1 ​

Mathematics
1 answer:
Nataliya [291]3 years ago
3 0

Answer: it is -97

Step-by-step explanation:

because you break it down

-1-81-16+1 ( and the -- turns into a + )

( get rid of the + )

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Answer:

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Lilit [14]
1. consider one angle of a (convex) heptagon. From that angle you can construct 7-3=4 diagonals. (-3 because we cannot create diagonals with the adjacent vertices and the angle itself )

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Step-by-step explanation:

sure i am here to help always for

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3 years ago
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