document.write( "Question 1097892: z is partly constant and partly varies directly as x. When x=8, z=59. when x=11, z=80. Find the value of z when x=5. \n" ); document.write( "
Algebra.Com's Answer #712298 by josgarithmetic(39618)\"\" \"About 
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z is partly constant and partly varies directly as x. When x=8, z=59. when x=11, z=80. Find the value of z when x=5.\r
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\n" ); document.write( "\n" ); document.write( "You may have ordered pair as (x,z) and your described points are (8,59) and (11,90). You could find a relationship like z=mx+b.\r
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\n" ); document.write( "\n" ); document.write( "\"m=%2890-59%29%2F%2811-8%29=31%2F3\"\r
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\n" ); document.write( "\n" ); document.write( "\"b=z-mx\"
\n" ); document.write( "\"b=90-11%2831%2F3%29\"
\n" ); document.write( "\"b=270%2F3-11%2A31%2F3\"
\n" ); document.write( "\"b=-71%2F3\"\r
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\n" ); document.write( "\n" ); document.write( "\"z=%2831%2F3%29x-71%2F3\"
\n" ); document.write( "If this does not give the result or answer you expect, then maybe you should explain better \"partly constant and partly varies directly\".
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