document.write( "Question 965511: what is the first number of a geometric sequence if the next two numbers are 3 and 17 \n" ); document.write( "

Algebra.Com's Answer #590825 by Edwin McCravy(20056) $\"\"$ $\"About$

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what is the first number of a geometric sequence if the next two numbers are 3 and 17
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document.write( "Let the first term be x:\r\n" );
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document.write( "The sequence goes\r\n" );
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document.write( "x, 3, 17\r\n" );
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document.write( "2nd term ÷ 1st term = 3rd term ÷ 2nd term\r\n" );
document.write( "    3    ÷     x    =    17    ÷    3\r\n" );
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document.write( "Get the equation all together:\r\n" );
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document.write( "                3÷x = 17÷3\r\n" );
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document.write( "Cross multiply:\r\n" );
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document.write( "                  9 = 17x\r\n" );
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document.write( "Divide through by 17\r\n" );
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document.write( "                = x\r\n" );
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document.write( "The sequence is , 3, 17  \r\n" );
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document.write( "Answer: \r\n" );
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document.write( "Edwin

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