document.write( "Question 1149671: Hooke's Law says that the force exerted by the spring in a spring scale varies directly with the distance that the spring is stretched. If a 11 pound mass suspended on a spring scale stretches the spring 4 inches, how far will a 21 pound mass stretch the spring? (Round off your answer to 1 decimal place.) \n" ); document.write( "

Algebra.Com's Answer #771019 by ikleyn(52777) $\"\"$ $\"About$

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document.write( "Use the proportion\r\n" );
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document.write( "     = .\r\n" );
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document.write( "From the proportion, find  x = .\r\n" );
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document.write( "Use your calculator.\r\n" );
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\n" ); document.write( "\n" ); document.write( "On proportions, see the lessons\r
\n" ); document.write( "\n" ); document.write( "    - Proportions\r
\n" ); document.write( "\n" ); document.write( "    - Using proportions to solve word problems \r
\n" ); document.write( "\n" ); document.write( "    - Using proportions to solve word problems in Physics \r
\n" ); document.write( "\n" ); document.write( "    - Using proportions to solve Chemistry problems\r
\n" ); document.write( "\n" ); document.write( "    - Typical problems on proportions \r
\n" ); document.write( "\n" ); document.write( "    - Using proportions to estimate the number of fish in a lake\r
\n" ); document.write( "\n" ); document.write( "    - HOW TO algebreze and solve these problems using proportions \r
\n" ); document.write( "\n" ); document.write( "    - Problems on proportions for mental solution \r
\n" ); document.write( "\n" ); document.write( "    - Selected problems on proportions from the archive \r
\n" ); document.write( "\n" ); document.write( "    - OVERVIEW of lessons on proportions\r
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\n" ); document.write( "\n" ); document.write( "These lessons were written specially for you. \r
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\n" ); document.write( "\n" ); document.write( "Read them and become an expert in this area.\r
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\n" ); document.write( "\n" ); document.write( "Start from the very first lesson.\r
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\n" ); document.write( "\n" ); document.write( "Consider these lessons as your textbook, handbook, tutorials and (free of charge) home teacher.\r
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