Solve for x. 9 km 12 km X

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asked Mar 18, 2022 15.7k views

1 vote

Solve for x.
9 km
12 km
X

Mathematics
high-school

Bernardo Siu asked

by Bernardo Siu

3.8k points

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1 Answer

3 votes

Answer:

15km

Explanation:

$\rm \mapsto \: {9}^(2) + {12}^(2) = {x}^(2) \\ \rm \mapsto \: {x}^(2) = 81 + 144 \\ \rm \mapsto \: {x }^(2) = 225 \\ \rm \mapsto \: x = √(225) \\ \rm \mapsto \: x = 15$

Dorie answered Mar 24, 2022

by Dorie

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