document.write( "Question 551097: Find three arithmetic means between -2 and 12. \n" ); document.write( "
Algebra.Com's Answer #359394 by mathstutor458(57)\"\" \"About 
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first number = -2
\n" ); document.write( "fifth number = 12
\n" ); document.write( "because we need to find three arithmaetic means between -2 and 12.so, totally we get 5 numbers.
\n" ); document.write( "this is a arithmatic series,numbers must be -2,-2+d,-2+2d,-2+3d,-2+4d
\n" ); document.write( "-2+4d must be equal to 12 because it is fifth number
\n" ); document.write( "-2+4d=12
\n" ); document.write( "4d=12+2=14
\n" ); document.write( "d=14/4=7/2=3.5\r
\n" ); document.write( "\n" ); document.write( "second term = -2+d=-2 + 3.5 = 1.5
\n" ); document.write( "third term = -2+2d = -2+2*3.5= -2+7=5
\n" ); document.write( "fourth term= -2+3d = -2+3*3.5 = -2+10.5=8.5\r
\n" ); document.write( "\n" ); document.write( "Therefore the series is -2,1.5,5,8.5,12
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