document.write( "Question 879779: is this a geometric sequence.
\n" ); document.write( "1, -2, 4, -8, 16 true or false\r
\n" ); document.write( "\n" ); document.write( " is this a geometric sequence
\n" ); document.write( "2, 4, 8.5, 16 true or false
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #531036 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
{1, -2, 4, -8, 16 } r = -2 Yes geometric
\n" ); document.write( "{2, 4, 8.5, 16}, see no pattern..8.5 not in sync
\n" ); document.write( "
\n" );