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tatuchka [14]
3 years ago
14

Anyone know I’m having a hard time!

Mathematics
1 answer:
Rudiy273 years ago
5 0

Answer:

x = \sqrt{30}

Step-by-step explanation:

Applying altitude- on - hypotenuse theorem.

(leg of large Δ )² = ( part of hypotenuse below it ) × ( whole hypotenuse )

x² = 3 × (3 + 7) = 3 × 10 = 30 ( take square root of both sides )

x = \sqrt{30}

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