Answer:
8 units
Step-by-step explanation:
Since S is the midpoint of RT,
RS+ ST= RT
RS= ST
2RS= RT
Substituting the given information,
2(2x +4)= 8x
Expand:
2(2x) +2(4)= 8x
4x +8= 8x
Bringing x terms to one side of the equation:
8x -4x= 8
Simplify:
4x= 8
Divide both sides by 4:
x= 8 ÷4
x= 2
ST
= RS
= 2x +4
= 2(2) +4
= 4 +4
= 8 units
