document.write( "Question 1110582: A bridge spans a river. Its two towers are 3500 feet apart and rise 323 feet above the road. The cable between the towers has the shape of a parabola and the cable just touches the sides of the road midway between the towers. The parabola is positioned in a rectangular coordinate system with its vertex at the origin. The point ​(1750​,323​) lies on the​ parabola, as shown. Complete parts a and b.\r
\n" ); document.write( "\n" ); document.write( "a. Write an equation in the form y=ax`2 the parabolic cable. Do this by substituting 1750 for x and 323 for y and determining the value of a.\r
\n" ); document.write( "\n" ); document.write( "y=_____x`2 ​(Round to seven decimal places as​ needed.)
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Algebra.Com's Answer #725697 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
\"y=ax%5E2\"
\n" ); document.write( "\"a=y%2Fx%5E2\"
\n" ); document.write( "\"a=323%2F%281750%29%5E2\"\r
\n" ); document.write( "\n" ); document.write( "Work that out to 7 decimal places.
\n" ); document.write( "Why 7? Why not 19?
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