document.write( "Question 202120: The area of a trapezoid is A=(a+b)h over 2. If A=300, h=5, and b=30, what is the value of a? \n" ); document.write( "
Algebra.Com's Answer #152388 by rfer(16322)\"\" \"About 
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A=(a+b)h
\n" ); document.write( "a=A/h-b
\n" ); document.write( "a=300/5-30
\n" ); document.write( "a=60-30
\n" ); document.write( "a=30
\n" ); document.write( "Sorry for the missunderstanding, I did not see the over 2 before.
\n" ); document.write( "A=((a+b)h)/2
\n" ); document.write( "2A=ah+bh
\n" ); document.write( "ah=2A-bh
\n" ); document.write( "a=(2A-bh)/h
\n" ); document.write( "a=(2(300)-(30)(5))/5
\n" ); document.write( "a=(600-150)/5
\n" ); document.write( "a=450/5=90
\n" ); document.write( "I hope that looks better to you.
\n" ); document.write( "Again, sorry.
\n" ); document.write( "Bob
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