Answer:
G. 8m
Step-by-step explanation:
The perimeter of the given triangle:
[tex](-x^2+3x+30)+(x^2-9)+(18-2x)=44[/tex]
[tex]-x^2+3x+30+x^2-9+18-2x=44[/tex] combine like terms
[tex](-x^2+x^2)+(3x-2x)+(30-9+18)=44[/tex]
[tex]x+39=44[/tex] subtract 39 from both sides
[tex]x=5[/tex]
The length of the shortes side:
[tex]18-2x=18-2(5)=18-10=8\ m[/tex]
