document.write( "Question 257612: Determine the number of square units in the area of the trapezoid whose bases are 5 - x units and 13 + x units and whose height is 10 units. \n" ); document.write( "
Algebra.Com's Answer #189684 by checkley77(12844)\"\" \"About 
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A=1/2h(b1+b2)
\n" ); document.write( "A=10(5-x+13+x)/2
\n" ); document.write( "A=10*18/2
\n" ); document.write( "A=180/2
\n" ); document.write( "A=90 sq. units is the answer.
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