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Full text of "Smithsonian miscellaneous collections" See other formats ...

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Discover Questions

The half-life of strontium-90 is 28 years. Find the exponential decay model for strontium-90.? 1. Which is brighter in our sky, a star with apparent magnitude 4 or a star with apparent magnitude 14 ? 2. By how much? Fm=4/Fm=14? The greatest negative value of x for which sec x= -1? Can someone give me an explanation as to why you use tangent as opposed to sine and cosine to find height without the hypotenuse? WHAts the point of a sugar cube?

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