Answer :
Value of st is in this straight line is 5.88
In the given problem we have to find out the value of st. The straight line is Rt.
Given that Rs=3x
value of st is 6x-5
value of rt=58
Rs+st=rt=58
3x+6x-5=58
9x=53
x=5.88
Learn more about strainght line:
https://brainly.com/app/ask?q=straight+line
#SPJ9