document.write( "Question 713131: Draw a diagonal through cropped picture. Take length of diagonal (3 1/2\") and extend it 3 more times on paper. Draw new rectangles with these new diagonal lengths amd measure the widths. What should I be noticing about these new widths? I need to write an arithmetic sequence that has the length of the original diagonal. Using the terms of sequence of diagonal lengths, find the corresponding picture widths. What would the new widths be? I am totally lost on this one. \n" ); document.write( "
Algebra.Com's Answer #438318 by KMST(5328)![]() ![]() You can put this solution on YOUR website! What was meant by \"extend it 3 more times\"? \n" ); document.write( "Were you supposed to double, triple and quadruple the length of the diagonal? \n" ); document.write( "Or were you supposed to make a \n" ); document.write( "In either case you are constructing similar right triangles. The sides of those triangles are the diagonal and the sides of each rectangle. \n" ); document.write( "The ratio of lengths of side to diagonal are the same. \n" ); document.write( "The diagonals are expected to form an arithmetic sequence. \n" ); document.write( "(because you are adding the same length to the diagonal each time you extend it). \n" ); document.write( "Since the ratio of side to diagonal is the same, the sides will also form an arithmetic sequence . \n" ); document.write( " \n" ); document.write( "DOUBLING, TRIPLING AND QUADRUPLING: \n" ); document.write( "(Easiest option, and maybe what the problem was about). \n" ); document.write( " \n" ); document.write( "My diagonals measure 3.5, 7.0, 10.5, and 14.0 inches (increasing by 3.5\" each time). \n" ); document.write( "My rectangle lengths are 2.8, 5.6, 8.4, and 11.2 inches (increasing by 2.8\" each time). \n" ); document.write( "My rectangle widths are 2.1, 4.2, 6.3, and 8.4 inches (increasing by 2.1\" each time). \n" ); document.write( " \n" ); document.write( "ADDING 1 INCH TO THE DIAGONAL THREE TIMES: \n" ); document.write( " \n" ); document.write( "and 0.6\" ( \n" ); document.write( "My diagonals measure 3.5, 4.5, 5.5, and 6.5 inches (increasing by 1.0\" each time). \n" ); document.write( "My rectangle lengths are 2.8, 3.6, 4.4, and 5.2 inches (increasing by 0 .8\" each time). \n" ); document.write( "My rectangle widths are 2.1, 2.7, 3.3, and 3.9 inches (increasing by 0.6\" each time). \n" ); document.write( " |