document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=174626>Question 174626</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9781567655568/algebrahomeworkh>Amsco's Preparing for the Regents Examination Mathematics B</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> 4.) If sin(2theta + 18) = cos(5theta - 12), which of the follwoing pairs of angles are represented in this equation?<BR>\n" );
document.write( "     (a)42, 48 degrees<BR>\n" );
document.write( "     (b)38, 52 degrees<BR>\n" );
document.write( "     (c) 12, 68 degrees<BR>\n" );
document.write( "     (d) 45, 45 degrees\r<BR>\n" );
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document.write( "5) Crossing a wooden bridge at Letchworth Park, Melissa drops a penny into the water below for good luck. If the height of the penny is modeled by the function h(t)=64 - 16t^2, where t represents time in seconds and h(t) is height in feet, how many seconds did it take the penny to hit the water?<BR>\n" );
document.write( "     (a) 1 (b) 2 (c) 3 (d) 4\r<BR>\n" );
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document.write( "Sh0w work thanks so much!\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #129656 by </B><A HREF=/tutors/aboutme.mpl?userid=nycsub_teacher><B>nycsub_teacher(90)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nycsub_teacher><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=129656\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 5) Crossing a wooden bridge at Letchworth Park, Melissa drops a penny into the water below for good luck. If the height of the penny is modeled by the function h(t)=64 - 16t^2, where t represents time in seconds and h(t) is height in feet, how many seconds did it take the penny to hit the water?<BR>\n" );
document.write( "(a) 1 (b) 2 (c) 3 (d) 4 \r<BR>\n" );
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document.write( "Let h(t) = 0\r<BR>\n" );
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document.write( "0 = 64 - 16t^2\r<BR>\n" );
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document.write( "All you have to do is solve for t.\r<BR>\n" );
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document.write( "Can you take it from here?\r<BR>\n" );
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document.write( "Hello.  I received your e-mail.  You need more help, right?<BR>\n" );
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document.write( "Here is one of your questions:<BR>\n" );
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document.write( " (5) Crossing a wooden bridge at Letchworth Park, Melissa drops a penny into the water below for good luck. If the height of the penny is modeled by the function h(t)=64 - 16t^2, where t represents time in seconds and h(t) is height in feet, how many seconds did it take the penny to hit the water?<BR>\n" );
document.write( "(a) 1 (b) 2 (c) 3 (d) 4\r<BR>\n" );
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document.write( " Let h(t) = 0 \r<BR>\n" );
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document.write( "0 = 64 - 16t^2 \r<BR>\n" );
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document.write( "Subtract 64 from both sides.<BR>\n" );
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document.write( "-64 = -16t^2<BR>\n" );
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document.write( "Now divide both sides by -16.<BR>\n" );
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document.write( "-64/-16 = t^2<BR>\n" );
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document.write( "64/16 = t^2<BR>\n" );
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document.write( "4 = t^2<BR>\n" );
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document.write( "Finally take the square root of both sides of the equation.<BR>\n" );
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document.write( "sqrt{4} = sqrt{t^2}<BR>\n" );
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document.write( "2 = t<BR>\n" );
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document.write( "The answer is choice (b).<BR>\n" );
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document.write( "Do you need help with the trig equation question?<BR>\n" );
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document.write( "Happy new year!<BR>\n" );
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