Answer:
ST=0.5
Step-by-step explanation:
Well you can see that
[tex]SU=ST+TU[/tex]
because they are in the same segment and ST + SU form the segment SU
so
[tex]TU=1.1\\\\SU=1.6\\\\ST=?\\\\SU=ST+TU\\\\1.6=ST+1.1\\\\1.6-1.1=ST+1.1-1.1\\\\0.5=ST\\\\ST=0.5[/tex]
