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Paraphin [41]
2 years ago
6

NEED HELP FRERE BRAINLIST

Mathematics
1 answer:
Whitepunk [10]2 years ago
4 0

Answer:

7.5

Step-by-step explanation:

a^2+b^2=c^2\\x^2+5^2=9^2\\x^2+25=81\\x^2=56\\\sqrt{x^2} =\sqrt{56} \\x=7.5

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