Because the length cannot be negative the height of the plane is ___ miles.

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Because the length cannot be negative the height of the plane is miles class=

Respuesta :

Look at all the steps above. They lead to a double solution. The symbol

[tex]x=\pm 5[/tex]

means that [tex]x[/tex] can be either positive or negative 5. You can't accept negative values for lengths, so you're left with one option only.