document.write( "Question 989322: A pine tree is currently 9 feet tall and grows
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document.write( "6 inches every year. You plant a new variety of tree next to it that is 16 inches tall and grows 14 inches a year. When will the two trees be equal in height, and how tall will they be? Round the values to the nearest tenth. \n" );
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Algebra.Com's Answer #609685 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A pine tree is currently 9 feet tall and grows 6 inches every year. \n" ); document.write( " You plant a new variety of tree next to it that is 16 inches tall and grows 14 inches a year. \n" ); document.write( " When will the two trees be equal in height, and how tall will they be? \n" ); document.write( " Round the values to the nearest tenth. \n" ); document.write( ": \n" ); document.write( "let t = no. of years after planting the 2nd tree they will be equal in height \n" ); document.write( ": \n" ); document.write( "Change 9 ft to inches: 9 * 12 = 108 inches \n" ); document.write( "14t + 16 = 6t + 108 \n" ); document.write( "14t - 6t = 108 - 16 \n" ); document.write( "8t = 92 \n" ); document.write( "t = 92/8 \n" ); document.write( "t = 11.5 yrs, they will be equal height \n" ); document.write( "and \n" ); document.write( "14(11.5) + 16 = 177 inches high \n" ); document.write( "check this with 1st tree \n" ); document.write( "6(11.5) + 108 = 177 inches \n" ); document.write( ": \n" ); document.write( "That would be 14 ft 9 inches high \n" ); document.write( " |