Question

PLEASE HELPPPPPPPPPP

Answer 1

I'm pretty sure it's 17 units

Explanation:

I got u

Answer 2

x=3

Explanation:

RS=23-2x

ST=9x-5

RT=39

RS=x

RS+ST=RT

23-2x+9x-5=39

9x-2x+23-5=39

7x+18=39

7x=39-18

7x=21

x=21/7=3

x=3

so RS=3

hope this is helps u