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Radium-221 has a half-life of 30 seconds. How long will it take for 80% of a sample to decay
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Identify the conclusion of the conditional statement. if you live in phoenix, then you live in arizona.
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If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.
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The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle
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Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms
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Radium-221 has a half-life of 30 seconds. How long will it take for 80% of a sample to decay...
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