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Vsevolod [243]
3 years ago
5

HELP PLEASE 25 POINTS

Mathematics
2 answers:
Yuri [45]3 years ago
7 0

Answer:

It is only 13

Step-by-step explanation:

Brainly takes away half points by the way

mixas84 [53]3 years ago
5 0

Answer:

AD=√AB^2-BD^2=√10^2-8^2=√36=6

DC=√BC^2-BD^2=√17^2-8^2=√225=15

AC=AD+DC=21

Step-by-step explanation:

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