Answer:
The length of VW is [tex]25\ m[/tex]
Step-by-step explanation:
we know that
The perimeter of triangle TVW is equal to
[tex]P=VW+TV+TW[/tex]
we have
[tex]P=74\ m[/tex]
so
[tex]74=VW+TV+TW[/tex] -----> equation A
[tex]VW=TV+3[/tex] ----> equation B
[tex]TW=(VW+TV)-20[/tex] ----> equation C
substitute equation B in equation C
[tex]TW=(TV+3+TV)-20[/tex]
[tex]TW=2TV-17[/tex] ----> equation D
substitute equation B and equation D in equation A
[tex]74=(TV+3)+TV+(2TV-17)[/tex]
solve for TV
[tex]74=4TV-14[/tex]
[tex]4TV=74+14[/tex]
[tex]4TV=88[/tex]
[tex]TV=22\ m[/tex]
Find the value of VW
[tex]VW=TV+3[/tex] -----> [tex]VW=22+3=25\ m[/tex]
Find the value of TW
[tex]TW=2TV-17[/tex] -----> [tex]TW=2(22)-17=27\ m[/tex]