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Answers by Kerlene

Answers by Kerlene
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An original sample of K-40 has a mass of 25.00 grams. After 3.9 × 109 years, 3.125 grams of the original sample remains unchanged. What is the half-life of K-40? (1) 1.3 × 109 y (3) 3.9 × 109 y (2) 2.6
answered Jun 19, 2016
3 votes
152k views
Bowling costs $3.25 a game plus $4.27 for the shoes. Write an equation that expresses this cost.
answered Oct 25, 2015
0 votes
126k views
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