document.write( "Question 1204542: The water level at an ocean inlet has a depth, d in meters, that varies with the time, t, in hours after midnight, according to the equation d = sin(2π(t-4/12.4)) + 6. What is the water depth at 5:30 ? To the nearest hundredth of a metre. \n" ); document.write( "

Algebra.Com's Answer #840865 by ikleyn(52908) $\"\"$ $\"About$

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\n" ); document.write( "The water level at an ocean inlet has a depth, d in meters, that varies with the time, t,
\n" ); document.write( "in hours after midnight, according to the equation d = sin(2π(t-4/12.4)) + 6.
\n" ); document.write( "What is the water depth at 5:30 ? To the nearest hundredth of a metre.
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document.write( "I will assime that 5:30 in this problem is 5:30 am;  so t= 5.5 hours  in the formula.\r\n" );
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document.write( "Then to get the answer, you should substitute t= 5.5 into the given formula\r\n" );
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document.write( "    d = sin(2pi*((5.5-4)/12.4))) + 6 = 6.69 meters  (approximately).    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "This problem is a matter of substituting a value into the formula.\r
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\n" ); document.write( "\n" ); document.write( "Notice that in your formula in the post, a pair of parentheses is missed,
\n" ); document.write( "so I added it based on my common sense and the rules of Math grammar.\r
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