document.write( "Question 173132This question is from textbook Amsco's Preparing for the Regents Examination Mathematics B
\n" ); document.write( ": 8. solve for x: (3 + 2i) + (4 + xi) = 7 - 5i\r
\n" ); document.write( "\n" ); document.write( "9. Which of the following is not sufficient to prove that a quadrilateral is a parallelogram?
\n" ); document.write( " (1) opposite sides are congruent (2) opposite angles are congruent
\n" ); document.write( " (3) diagonals are congruent (4) consecutive angles are supplementary\r
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\n" ); document.write( "\n" ); document.write( "Show work please, thank you! \n" ); document.write( "
Algebra.Com's Answer #127983 by stanbon(75887)\"\" \"About 
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8. solve for x: (3 + 2i) + (4 + xi) = 7 - 5i
\n" ); document.write( "7 + (2+x)i = 7 - 5i
\n" ); document.write( "2+x = 5
\n" ); document.write( "x = 3
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\n" ); document.write( "\n" ); document.write( "9. Which of the following is not sufficient to prove that a quadrilateral is a parallelogram?
\n" ); document.write( " (1) opposite sides are congruent (2) opposite angles are congruent
\n" ); document.write( " (3) diagonals are congruent (4) consecutive angles are supplementary\r
\n" ); document.write( "\n" ); document.write( "Draw the pictures of the various conditions; see if you get a parallelogram
\n" ); document.write( "under each condition.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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