Atomic bomb explosion
Sr-90 may be produced from an atomic bomb explosion. The half-life of Sr-90 is 28.8 years. What fraction of the Sr-90 originally produced by the first atomic bomb in July 1945 still remains as of July 2012?
a) 0.102
b) 0.209
c) 0.443
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A receiving report is then sent to accounts payable, where it is reconciled with the relevant purchase orders and invoices and payment is authorized. Which of the following would correct control weaknesses, if any, related to these activities?
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