document.write( "Question 614853: COULD SOMEONE HELP ME WITH THIS PROBLEM:\r
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document.write( "7. Select the set of equations that represents the following situation: Mike invested $434 for one year. He invested part of it at 9% and the rest at 10%. At the end of the year he earned $40.16 in interest. How much did Mike invest at each rate of interest?
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document.write( " 1) x + y = 434; 9x + 10y = 40.16
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document.write( " 2) 0.09x + 0.10y = 434; x + y = 40.16
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document.write( " 3) x + y = 434; 0.09x + 0.10y = 40.16
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document.write( " 4) 0.09 • 434 + 0.10 • 434 = 40.16
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Algebra.Com's Answer #386791 by Theo(13342) You can put this solution on YOUR website! total investment is 434. \n" ); document.write( "part is invested at 9% and part is invested at 10% \n" ); document.write( "interest at end of year is 40.16 \n" ); document.write( "x = part he invested at 9% \n" ); document.write( "y = part he invested at 10% \n" ); document.write( "your equations are: \n" ); document.write( ".09*x + .10*y = 40.16 \n" ); document.write( "x + y = 434.00 \n" ); document.write( "that looks a lot like selection 3. \n" ); document.write( " \n" ); document.write( " |