document.write( "Question 956362: A=1/2h(b1+b2); If A=136 when b1=7, and h=16, find b2 \n" ); document.write( "

Algebra.Com's Answer #584555 by macston(5194) $\"\"$ $\"About$

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A=136; b1=7; h=16
\n" ); document.write( " $\"A=%281%2F2%29h%28b%5B1%5D%2Bb%5B2%5D%29\"$ Multiply each side by 2/h.
\n" ); document.write( " $\"2A%2Fh=b%5B1%5D%2Bb%5B2%5D\"$ Subtract $\"b%5B1%5D\"$ from each side.
\n" ); document.write( " $\"2A%2Fh-b%5B1%5D=b%5B2%5D\"$ Plug in values
\n" ); document.write( " $\"2%28136%29%2F16-7=b%5B2%5D\"$
\n" ); document.write( " $\"17-7=b%5B2%5D\"$
\n" ); document.write( " $\"10=b%5B2%5D\"$ ANSWER: b2=10
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