Answer:
s = 10
Step-by-step explanation:
since the triangles are similar then the ratios of corresponding sides are in proportion , that is
[tex]\frac{AB}{XY}[/tex] = [tex]\frac{BC}{YZ}[/tex] ( substitute values )
[tex]\frac{8}{4}[/tex] = [tex]\frac{s}{5}[/tex] ( cross- multiply )
4s = 40 ( divide both sides by 4 )
s = 10
