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The sum of a number and twelve is twenty-one. What is the number? 21 n 12 8 9 10 33
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If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).
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Alarger number is double the sum of a smaller number. the larger number is 2 less than 3 times the smaller number. if y represents the larger number and x represents the smaller number, which equations model the situation
Answers: 1
The sum of a number and twelve is twenty-one. What is the number? 21 n 12 8 9 10 33...
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