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If scientists determine the age of a rock to be three billion years old, what else do they know? A) The rock came from outside the solar system B) The rock was part of a comet C) The Earth is at least
answered
Aug 10, 2018
Biology
middle-school
2
votes
7.7k
views
What is the power of 10 when 0.000028 is written in scientific notation?
answered
Jan 24, 2018
Physics
middle-school
4
votes
64.1k
views
Republican president James Garfield was opposed to
answered
Sep 19, 2017
History
high-school
4
votes
67.1k
views
A particular type of automobile storage battery is characterized as "207 - Ampere - hour, 9.4 V." What total energy can the battery deliver? Answer in units of J.
answered
Mar 19, 2017
Physics
high-school
0
votes
40.9k
views
In the equation 3^x=20, to the nearest tenth, what does x equal?
answered
Aug 25, 2015
Mathematics
high-school
5
votes
190k
views
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