document.write( "Question 823097: two trains going in opposite directions leave at the same time. train b travels 25 mph faster than train a. in 8 hours the trains are 920 miles apart. find the speed of each \n" ); document.write( "
Algebra.Com's Answer #495275 by TimothyLamb(4379)\"\" \"About 
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\n" ); document.write( "x = speed of trainA
\n" ); document.write( "y = speed of trainB
\n" ); document.write( "y = x + 25
\n" ); document.write( "---
\n" ); document.write( "relative speed of the two trains:
\n" ); document.write( "s = d / t
\n" ); document.write( "s = x + y
\n" ); document.write( "x + y = d / t
\n" ); document.write( "x + y = 920 / 8
\n" ); document.write( "x + y = 115
\n" ); document.write( "---
\n" ); document.write( "system of linear equations:
\n" ); document.write( "y = x + 25
\n" ); document.write( "x + y = 115
\n" ); document.write( "---
\n" ); document.write( "put the system of linear equations into standard form
\n" ); document.write( "---
\n" ); document.write( "x - y = -25
\n" ); document.write( "x + y = 115
\n" ); document.write( "---
\n" ); document.write( "copy and paste the above standard form linear equations in to this solver:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "x= trainA = 45 mph
\n" ); document.write( "y= trainB = 70 mph
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php \n" ); document.write( "
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