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Answers by Jafari

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Scientists found stone tool specimens in a cave in Africa. Using potassium–argon radiometric dating, they discovered that the tools contained 25 percent radioactive potassium-40. How old are the tools?
answered Jun 17, 2018
5 votes
44.0k views
With a mother that is colorblind and a father that is not colorblind, what is the probability that a male child is colorblind? A. 0 B. 1/4 C. 1/2 D. 1
answered May 22, 2018
2 votes
132k views
Jonah bicycled 12 miles in 4 hours. What is the unit rate?
answered Mar 29, 2018
5 votes
120k views
4. Aside from the possibility of career advancement, for what other reasons is professional development important?
answered Mar 26, 2018
6 votes
123k views
What societal changes during the eighteenth century helped to increase the popularity of novels such as The Life and Adventures of Robinson Crusoe? -the increase in the population -the growth of the publishing
answered Dec 9, 2017
4 votes
133k views
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