document.write( "Question 305187: what is the tenth term of the geometric sequence 1/2, -1, 2, -4? \n" ); document.write( "
Algebra.Com's Answer #218524 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
what is the tenth term of the geometric sequence 1/2, -1, 2, -4?
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document.write( "\"a%5B1%5D=1%2F2\", \"a%5B2%5D=-1\", \"a%5B3%5D=2\", \"a%5B4%5D=-4\"\r\n" );
document.write( "\"r=a%5B2%5D%2Fa%5B1%5D=%28-1%29%2F%281%2F2%29=%28-1%29%282%2F1%29=-2\"\r\n" );
document.write( "\"r=a%5B3%5D%2Fa%5B2%5D=%282%29%2F%28-1%29=-2\"\r\n" );
document.write( "\"r=a%5B4%5D%2Fa%5B3%5D=%28-4%29%2F2=-2\"\r\n" );
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document.write( "\"a%5Bn%5D=a%5B1%5Dr%5E%28n-1%29\"\r\n" );
document.write( "\"a%5B10%5D=%281%2F2%29%28-2%29%5E%2810-1%29\"\r\n" );
document.write( "\"a%5B10%5D=%281%2F2%29%28-2%29%5E9\"\r\n" );
document.write( "\"a%5B10%5D=%281%2F2%29%28-512%29\"\r\n" );
document.write( "\"a%5B10%5D=-256\"\r\n" );
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document.write( "1/2, -1, 2, -4, 8, -16, 32, -64,  128,  -256\r\n" );
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document.write( "Edwin
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