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I need to know the answer to this equation pleaseee

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

5 0

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

Dimensions of the Pool =80 feet long by 20 feet wide

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$1344=(80+2w)(20+2w)-(80*20)\\1344=80*20+160w+40w+4w^2-80*20\\4w^2+200w=1344\\4w^2+200w-1344=0\\We factorize\\4(w^2+50w-336)=0\\4(w^2-6w+56w-336)=0\\w(w-6)+56(w-6)=0\\(w-6)(w+56)=0\\w-6=0$ or $ w+56=0\\w=6$ ft or $ w=-56$ \\Therefore, the width of the walkway , w=6 feet.$

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