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Fredrick Jerde

Lvl 10
3y ago
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Wiki User

14y ago

REMEMBER a2+b2=c2

So b=7 and c=12 but we don't know a yet.

So the equation would be a2+72=122

Find the square root of 7 and 12.

So now the equation turns to a2+49=144

Subtract 49 from 144 a2+49=144

-49 -49

-------

a2=95

find square root of a2 which is a.

find square root of 95 which is 9.75.

So a=9.75

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Kasson Myers

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1y ago

9.70

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Q: 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?
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