document.write( "Question 1196539: Two equations can be used to track the position of a baseball t seconds after it is hit. For instance, suppose
\n" ); document.write( "h = −16t2 + 45t + 4.7
\n" ); document.write( " gives the height, in feet, of a baseball t seconds after it is hit, and
\n" ); document.write( "s = 103.9t
\n" ); document.write( " gives the horizontal distance, in feet, of the ball from home plate t seconds after it is hit. (See the following figure.) Use these equations to determine whether this particular baseball will clear a 10-foot fence positioned 340 feet from home plate. \n" ); document.write( "

Algebra.Com's Answer #829408 by ikleyn(52779) $\"\"$ $\"About$

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document.write( "From SECOND equation, you should calculate the time needed to cover 340 feet horizontally\r\n" );
document.write( "at the horizontal rate of 103.9 ft/s.\r\n" );
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document.write( "Having it, you should substitute this time value into FIRST equation and CHECK, \r\n" );
document.write( "if the corresponding height is greater than 10 feet.\r\n" );
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\n" ); document.write( "\n" ); document.write( "So, all needed instructions are given to you;\r
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\n" ); document.write( "\n" ); document.write( "the rest is boring, mechanistic and routine arithmetic, feasible for every student.\r
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