document.write( "Question 1013279: The upper and lower bases of a trapezoid are 13 cm and 19 cm, respectively. If the median of the trapezoid is 3x+1, find the value of x. \n" ); document.write( "
Algebra.Com's Answer #629512 by fractalier(6550)\"\" \"About 
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The median of a trapezoid is the average of the base lengths...
\n" ); document.write( "thus we can write
\n" ); document.write( "3x + 1 = (13+19)/2 = 16
\n" ); document.write( "3x = 15
\n" ); document.write( "x = 5
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