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16-12-2021
Physics

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Аноним Аноним

16-12-2021

Answer:

B) 17

Explanation:

A + B = 23

A - B = 7

B = A - 7

A + (A - 7) = 23

2A = 23 + 7

2A = 30

A = 15

15 - B = 7

B = 8

√(15² + 8²) = √289 = 17

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