document.write( "Question 455929: If the distance between the point (a,3) and (2,- 4) is sqr rt 74 units.Find a. How can I find a if they gave me any numbers in order to find a? Please show me how to solve this problem \n" ); document.write( "
Algebra.Com's Answer #312987 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! If the distance between the point (a,3) and (2,- 4) is sqr rt 74 units.Find a. How can I find a if they gave me any numbers in order to find a? Please show me how to solve this problem \n" ); document.write( "..\r \n" ); document.write( "\n" ); document.write( "To solve this problem use the distance formlula: \n" ); document.write( "d=sqrt(x1-x2)^2+(y1-y2)^2) \n" ); document.write( "√74=sqrt(2-a)^2+(-4-3)^2 \n" ); document.write( "square both sides \n" ); document.write( "74=4-4a+a^2+49 \n" ); document.write( "74=a^2-4a+53 \n" ); document.write( "a^2-4a-21=0 \n" ); document.write( "(a-7)(a+3)=0 \n" ); document.write( "a=7 \n" ); document.write( "or \n" ); document.write( "a=-3 \n" ); document.write( " |