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Sagot :
- Base=B=5.2mi
- Perpendicular=P=3.9mi
Hypotenuse H we need
Apply Pythagorean theorem
- H²=P²+B²
- H²=3.9²+5.2²
- H²=6.5²
- H=6.5mi

Answer:
6.5 miles far from the bank.
Step-by-step explanation:
→ AC = 3.9 miles (perpendicular)
→ BC = 5.2 miles (base)
→ AB = x (hypotenuse)
By using Pythagoras theorem the length of AB will be,
→ (Hypotenuse)²=(Perpendicular)²+(Base)²
→ AB² = AC² + BC²
→ AB² = (3.9)² + (5.2)²
→ AB² = 15.21 + 27.04
→ AB = √(42.25)
→ [ AB = 6.5 ]
Hence, friend's house is 6.5 miles away.

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