Answer:
[tex]\huge\boxed{\sf 2}[/tex]
Step-by-step explanation:
Since these triangles are similar, we'll use proportion to find the unknown side.
[tex]\sf \frac{25}{10} = \frac{5}{?}[/tex]
Cross Multiply
[tex]\sf ? * 25 = 10*5[/tex]
Divide 25 to both sides
[tex]\sf ? = 50/25\\\\? = 2[/tex]
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AnonymousHelper1807
