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The length of a rectangle is 9 inches more than three times the width. The perimeter is 98 inches. Find length and width

Sagot :

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[tex]x-length\\\\ y-width\\\\ Perimeter=2length+2width\\\\ x-9=3y\ \ \--->\ \ x=3y+9\\ 2x+2y=98\\\\2(3y+9)+2y=98\\\\ 6y+18+2y=98\\\\ 8y+18=98\ \ \ |subtract\ 18\\\\ 8y=80\ \ \ |divide\ by\ 8\\\\ y=10inch\\\\ x=39inch [/tex]Answer here
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