document.write( "Question 383968: 89. Penny tossing. If a penny is thrown downward at 30 ft/sec
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Algebra.Com's Answer #272183 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
neglecting air resistance ___ h = 16t^2 + 30t ___ 1000 = 16t^2 + 30t\r
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\n" ); document.write( "\n" ); document.write( "16t^2 + 30t - 1000 = 0 ___ 8t^2 + 15t - 500 = 0\r
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\n" ); document.write( "\n" ); document.write( "use the quadratic formula to find t ___ the positive solution is the one you want
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