The Monahan - 4x^2 100x 360 = 0 our old friend the quadratic equation Simplify divide by 4 x^2 25x 90 = 0 Unfortunately this will not factor Use

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The Monahan’s garden is 20 feet by 30 feet. They wish to lay a uniform border of pine bark around the garden. How large a strip should they lay if they only have enough bark to cover 360 square feet? PLEASE RATE THE ANSWER PLEASE, THAT HELPS US. solution: let x = the width of the border Find the area of the garden 20 * 30 = 600 sq/ft then the overall dimensions of border and garden: (2x+20) by 2x+30) The overall area: (2x+20) * (2x+30) = 960 FOIL 4x^2 + 60x + 40x + 600 = 960 4x^2 + 100x + 600 - 960 = 0
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Unformatted text preview: 4x^2 + 100x - 360 = 0; our old friend, the quadratic equation Simplify, divide by 4 x^2 + 25x - 90 = 0 Unfortunately this will not factor, Use the quadratic equation a=1; b=25; c=-90 the positive solution x = x = 3.19 ft is the width of the border-------------------------------------------------------------------end PLEASE RATE THE ANSWER PLEASE verification. Check solution on calc using 3.2 for the width 26.4 * 36.4 = 961 ~ 960; Subtract the area of the garden: 960 - 600 = 360, the area of the border PLEASE RATE THE ANSWER PLEASE...
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This note was uploaded on 11/01/2010 for the course MATH 230984 taught by Professor Jones during the Spring '10 term at Abraham Baldwin Agricultural College.

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The Monahan - 4x^2 100x 360 = 0 our old friend the quadratic equation Simplify divide by 4 x^2 25x 90 = 0 Unfortunately this will not factor Use

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