Picture Perfect

Autore:wotton.dorothea.18

The Problem:

A 9-by-12 rectangular picture is framed by a border of uniform width. Given that the combined area of picture plus frame is 180 square units, find the width of the border.

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Steel Chair
Discriminant of y = ax² + bx + c
bewijs stelling van Pythagoras
Tangent Vector (2)

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FINALFORREAL2
Transaltion 2
*Dés et Horloge - Magie
Simple Derivative

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