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The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years
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Novak gives 9 packs of paper to a group of 5 students. if the group shares the paper equally how many packs of paper does each student get. write the a answer as a mixed number
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Zahra wants the equation below to have an infinite number of solutions when the missing number is placed in the box.
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Solve : (show your work) 10-3x> -23...
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