Respuesta :

Answer:

[tex]w = 17in[/tex]

Step-by-step explanation:

Given:

[tex]p=2l+2w[/tex]

[tex]l=35in[/tex]

[tex]p=84in[/tex]

We know these values, so let's plug them into the equation and solve for [tex]w[/tex].

[tex]p=2l+2w[/tex]

[tex]84=2(35)+2w[/tex]

[tex]84=70+2w[/tex]

[tex]14=2w[/tex]

[tex]w=7[/tex]