document.write( "Question 88811: 1.Find the solution of 3x + 6y = 12 when x = 2\r
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document.write( "2.Given the equation -2y + 4x = 18, find y when x = 1. \r
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document.write( "3.Write the equation 3x - 4y = 8 in slope-intercept form. \r
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document.write( "4. The cost Kim pays for chocolates varies directly as the number of pounds of chocolates she buys. She pays $5.40 for 3 pounds of chocolates. Find how much she pays for 5 pounds of chocolates.
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Algebra.Com's Answer #64620 by malakumar_kos@yahoo.com(315)![]() ![]() ![]() You can put this solution on YOUR website! 1.Find the solution of 3x + 6y = 12 when x = 2 \r \n" ); document.write( "\n" ); document.write( "2.Given the equation -2y + 4x = 18, find y when x = 1. \n" ); document.write( "3.Write the equation 3x - 4y = 8 in slope-intercept form. \n" ); document.write( "4. The cost Kim pays for chocolates varies directly as the number of pounds of chocolates she buys. She pays $5.40 for 3 pounds of chocolates. Find how much she pays for 5 pounds of chocolates. \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " 1) When x= 2 the solution for 3x+6y = 12 will be , 3*2+6y = 12 \n" ); document.write( " 6+6y = 12 \n" ); document.write( " 6y = 12-6 = 6 \n" ); document.write( " 6y = 6 \n" ); document.write( " y = 1 \n" ); document.write( " The solution for 3x+6y = 12 when x = 2 is y = 1\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " 3) Given eq'n is 3x-4y = 8 \n" ); document.write( " this can be expressed in slope intercept form as \r \n" ); document.write( "\n" ); document.write( " -4y = -3x+8 divide by -4 throughout \r \n" ); document.write( "\n" ); document.write( " y = 3x/4-2 is the required slope intercept form\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " 4)Let the cost of chocolates be represented by C \n" ); document.write( " Quantity of chocolates be represented by P\r \n" ); document.write( "\n" ); document.write( " given c is directly proportional to p or C = k*p where k is a \r \n" ); document.write( "\n" ); document.write( " proportionality constant\r \n" ); document.write( "\n" ); document.write( " cost of 3 pounds of chocolates = $5.40 using this we will find \n" ); document.write( " out the value of K \n" ); document.write( " C = K*P \n" ); document.write( " K = C/P = $ 5.40/3 = $ 1.80\r \n" ); document.write( "\n" ); document.write( " therefore cost of 5 pounds of chocolates = C = K*5 \n" ); document.write( " = 1.80*5 \n" ); document.write( " = 9.00 \n" ); document.write( " = $ 9.00 \n" ); document.write( " \r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " 2) -2y+4x = 18 When x = 1 the eq'n becomes -2y = 18-4x \n" ); document.write( " \n" ); document.write( " -2y = 18-4*1 = 18-4 \n" ); document.write( " -2y = 14 or y = 14/-2\r \n" ); document.write( "\n" ); document.write( " y = -7 \n" ); document.write( " The solution for the given eq'n when x = 1 is y = -7\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |