document.write( "Question 432674: Hi. I am having complications solving two word problems involving inequalities. Please solve these and/or help me on these word problems. Thanks a lot!\r
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document.write( "1. Find the largest pair of consecutive even integers whose sum is less than 85.
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document.write( "2. Eve's grades on three tests were 78, 93, and 63. What is the lowest grade she can get on the next test to have an average higher than 80?\r
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document.write( "Thanks again!
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document.write( "Megan, 13 year old Algebra student
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Algebra.Com's Answer #300064 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! 1. Find the largest pair of consecutive even integers whose sum is less than 85. \n" ); document.write( ": \n" ); document.write( "Let the 2 consecutive even integers = x, (x+2) \n" ); document.write( "; \n" ); document.write( "the equation for the given statement: \n" ); document.write( "x + (x+2) < 85 \n" ); document.write( "Combine like terms: \n" ); document.write( "2x + 2 < 85 \n" ); document.write( "subtract 2 from both sides: \n" ); document.write( "2x < 85 - 2 \n" ); document.write( "2x < 83 \n" ); document.write( "Divide both sides by 2 \n" ); document.write( "x < \n" ); document.write( "x < 41.5 \n" ); document.write( "therefore \n" ); document.write( "40, 42, are the largest even consecutive integer \n" ); document.write( ": \n" ); document.write( "Check this \n" ); document.write( "40+42 = 82 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "2. Eve's grades on three tests were 78, 93, and 63. \n" ); document.write( " What is the lowest grade she can get on the next test to have an average higher than 80? \n" ); document.write( ": \n" ); document.write( "Let x = her grade on the 4th test \n" ); document.write( ": \n" ); document.write( "The equation \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Multiply both sides by 4 \n" ); document.write( "x + 234 > 4(80) \n" ); document.write( "x + 234 > 320 \n" ); document.write( "Subtract 234 from both sides \n" ); document.write( "x > 320 - 234 \n" ); document.write( "x > 86 \n" ); document.write( "She will need at least an 87 to have an average greater than 80 \n" ); document.write( "; \n" ); document.write( ": \n" ); document.write( "Check this: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |