Question

The triangles are similar. What is the value of x? x =

Answer 1

Understand similarity’s definition

Explanation:

So by definition
`36/12 =15/5 = 39/(x-10)`
Now solve for x
`39/(x-10) = 36/12 = 15/5 = 3`
Hence `13/(x-10) = 1`
Therefore `x=23`
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