Mathematics, 27.06.2021 08:50, fredvales19

A farmer makes a rectangular enclosure for his animals. He uses a wall for one side and a total of 72 metres of fencing for the other three sides.
The enclosure has width x metres and area A square metres.
Show that A = 72x - 21.

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A farmer makes a rectangular enclosure for his animals. He uses a wall for one side and a total of...