document.write( "Question 1045985: The area of a rectangle is the product of its length and width. A rectangle poster has an area of 260 square inches. The width of poster is greater than 10 inches and is a prime number. What is the width of the poster? Please give answer with explanation of how you came up with the answer. Thank you. \n" ); document.write( "
Algebra.Com's Answer #661486 by addingup(3677)![]() ![]() You can put this solution on YOUR website! L*W = 260 \n" ); document.write( "W= >10 and prime: 11, 13, 17. And 17*17 = 289, so it has to be smaller than 17. \n" ); document.write( "The numbers can be: \n" ); document.write( "Width 11, Length 23.63.. \n" ); document.write( "or \n" ); document.write( "Width 13, Length 20 This is a much more elegant answer, your poster is: \n" ); document.write( "Width 13, Length 20 \n" ); document.write( "----------------------- \n" ); document.write( "Another approach: \n" ); document.write( "L*W = 260 \n" ); document.write( "W = >10 and prime: 11, 13, 17 Look at these numbers and think 260. 26 is 2* which one? 13 jumps at you, because 13*2 = 26, thus 13*20 = 260. \n" ); document.write( " |