ItsJammy ItsJammy

10-02-2022
Mathematics

contestada

I'm giving 40 points for this!! Pleaseeee help ASAP :)

Im giving 40 points for this Pleaseeee help ASAP class=

Respuesta :

mhanifa mhanifa

11-02-2022

Answer:

7 m

Step-by-step explanation:

Let the width is w and the length is w + 5.

The area is 84:

w(w + 5) = 84
w² + 5w - 84 = 0
w² + 12w - 7 w - 84 = 0
w(w + 12) - 7(w + 12) = 0
(w - 7)(w + 12) = 0
w = 7 is the only positive root

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