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Ulleksa [173]
3 years ago
9

I need the answer to this asap, plzz

Mathematics
1 answer:
ira [324]3 years ago
3 0

Answer:

\mathrm{D.\:}\sqrt{126}

Step-by-step explanation:

All three triangles in the figure are similar. Therefore, we can set up the following proportion:

\frac{18}{m}=\frac{m}{7}

Cross-multiply to solve:

m^2=18\cdot 7 = 126, \\\\m=\fbox{$\sqrt{126}$}.

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