Question

Triangle ABC is similar to try to go to a DE what is the length of Ec

Answer 1

So, as both triangles are similar, we can write the following equation:

`(16)/(4)=(5+x)/(5)`

Now, all we need to do is to solve this equation for x:

`\begin{gathered} 80=4(5+x) \\ 20=5+x \\ x=15 \end{gathered}`

Thus, x=15.