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20 votes
20 votes
I need a bit of help. I need to solve for x.

I need a bit of help. I need to solve for x.-example-1
User Micky Balladelli
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2.2k points

1 Answer

16 votes
16 votes

ΔABC and ΔADE are similar, then


(AB)/(AD)=(BC)/(DE)

Replacing with data and solving for x,


\begin{gathered} (4)/(7)=(2)/(x) \\ 4\cdot x=7\cdot2 \\ x=(14)/(4) \\ x=3.5 \end{gathered}

User Erik Blomgren
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