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Gabrielle is 9 years younger than Mikhail. The sum of their ages is 75 . What is Mikhail's age?
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The equation x2 β 1x β 90 = 0 has solutions {a, b}. what is a + b?
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In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?
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The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.
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Gabrielle is 9 years younger than Mikhail. The sum of their ages is 75 . What is Mikhail's age?...
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