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Mathematics 21 Online
OpenStudy (anonymous):

What is the length, in units, of BD?

OpenStudy (anonymous):

OpenStudy (anonymous):

@hartnn

hartnn (hartnn):

BD is geometric mean of 12 and 15

hartnn (hartnn):

BD = \(\sqrt{12*15}=?\)

OpenStudy (anonymous):

lagging sorry... 180

OpenStudy (anonymous):

maybe its 14 because its twice as long as CD

hartnn (hartnn):

\(\sqrt{180}\)

OpenStudy (anonymous):

\[6\sqrt{5} \] or \[5\sqrt{6}\]

OpenStudy (anonymous):

@hartnn

hartnn (hartnn):

6\(\sqrt5\)

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