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Ivan
3 years ago
9

A plastic board that is 15 feet long is leaning against a wall

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
6 0

Answer:

9 ft

Step-by-step explanation:

<h3>a²+b²=c²</h3><h3>a²+12²=15²</h3><h3>a²+144=225</h3><h3>225-144=81</h3><h3>√81=9</h3>
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3 years ago
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Correct :)

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