document.write( "Question 763472: Hello! I'm having trouble with a Quadratic Equation word problem, quite frankly, I don't even know where to start. I know the formula, so I'm confident that I can solve it once it's in an equation form, but I just can't seem to get there. The question is:\r
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document.write( "Jasmine is a competitive diver. In a dive off an 8m platform, she reaches a maximum height of 8.4m after 0.30 seconds. How long does it take her to reach the water?\r
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document.write( "Thank's so much for the help, I really appreciate it!\r
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Algebra.Com's Answer #464832 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Jasmine is a competitive diver. \n" ); document.write( " In a dive off an 8m platform, she reaches a maximum height of 8.4m \n" ); document.write( " after 0.30 seconds. \n" ); document.write( " How long does it take her to reach the water? \n" ); document.write( ": \n" ); document.write( "The question is how long does it take to fall 8.4 meters \n" ); document.write( "The water is 0, therefore: \n" ); document.write( "-4.9t^2 + 8.4 = 0 \n" ); document.write( "-4.9t^2 = -8.4 \n" ); document.write( "t^2 = \n" ); document.write( "t^2 = +1.71 \n" ); document.write( "t = \n" ); document.write( "t = 1.3 seconds which is 1.6 seconds after she leaves the board \n" ); document.write( " \n" ); document.write( " |