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A 12-ft ladder is leaning against a building. The bottom of the ladder is 7 ft from the building. How high is the top of the ladder?

Respuesta :

5 ft off the ground I m pretty sure
use the Pythagorean
the whole length of the ladder is the hypotenuse 
[tex] x^{2} +7 ^{2}=12 ^{2} [/tex]  
49+x=144
-49       -49

9.75

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