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What is the half-life of iron-59, a radioisotope used medically in the diagnosis of anemia, if a sample with an initial decay rate of 16,800 disintegrations/min decays at a rate of 10,860 disintegrations/min
answered
Mar 25, 2018
Chemistry
college
3
votes
12.5k
views
What element is the most abundant in the earth's crust?
answered
Nov 26, 2017
Biology
high-school
2
votes
76.0k
views
The graph of f(x) = x^2 is shifted 3 units to the right to obtain the graph of g(x). Which of the following equations best describes g(x)? g(x) = (x + 3)^2 g(x) = x^2 − 3 g(x) = x^2 + 3 g(x) = (x − 3)^2
answered
Jan 7, 2017
Mathematics
high-school
6
votes
63.1k
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