document.write( "Question 75498: The relationship between a telescope's magnitude and the diameter of the telescopes lens can be modeled by M=5logD=2 where M is the magnitude and D is the diameter(in milimeters) of the lens. If a telescope can reveal stars with a magnitude of 12, what is the diameter of the lens. \n" ); document.write( "
Algebra.Com's Answer #54331 by ankor@dixie-net.com(22740)\"\" \"About 
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The relationship between a telescope's magnitude and the diameter of the telescopes lens can be modeled by M=5logD=2 where M is the magnitude and D is the diameter(in milimeters) of the lens. If a telescope can reveal stars with a magnitude of 12, what is the diameter of the lens.
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\n" ); document.write( "I assume the given equation should be this:
\n" ); document.write( "M = 5*log(D+2)
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\n" ); document.write( "5*log(D+2) = 12
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\n" ); document.write( "log(D+2) = 12/5
\n" ); document.write( "log(D+2) = 2.4
\n" ); document.write( "D + 2 = 251.1886; the anti-log of 2.4
\n" ); document.write( "D = 251.1886 - 2
\n" ); document.write( "D = 249.1886 millimeters or about .249 meters
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\n" ); document.write( "Perhaps I have not interpreted this formula correctly, hopefully the method will help you anyway.\r
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