Answers by Rich Duncan
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Answers by Rich Duncan

Answers by Rich Duncan
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A edge can represent
answered Mar 4, 2019
7 votes
32.2k views
when you breathe out, your breath contains the waste products of carbon dioxide and water. what cellular produces these wastes?
answered Oct 29, 2018
0 votes
113k views
Throughout the twentieth century, most economically advanced nations adopted ________ systems.
answered Jun 18, 2018
5 votes
124k views
Savings accounts and investment accounts are different in that savings accounts A. are for long-term goals. B. should be opened on a whim. C. grow faster and at a higher rate of return. D. are more secure.
answered May 27, 2018
6 votes
228k views
What is the equation of a line that is perpendicular to -x+2y=4 and passes through the point (-2, 1)
answered May 13, 2018
4 votes
173k views
What must happen for scientific theories to be accepted as valid? Scientific evidence must be reported, verified, and accepted by the scientific community. A hypothesis must be upgraded with supporting
answered Dec 14, 2017
4 votes
77.7k views
He ancient egyptian economy was based on which of the following? (1 point) trading farming construction manufacturing
answered Nov 21, 2017
1 vote
75.2k views
What factors contributed to the development of feudalism and manorialism
answered May 29, 2017
5 votes
177k views
Each trait of a plant is determined by
answered May 19, 2017
0 votes
136k views
In the ancient Roman republic, who were the consuls? A) the heirs to the emperor's throne B) Senators who also led committees to deal with specific issues C) counselors who represented defendants in criminal
answered Jul 14, 2016
7 votes
5.5k views
A man on the moon with a mass of 90 kilograms weighs 146 newtons. The radius of the moon is 1.74 × 106 meters. Find the mass of the moon.
answered Feb 27, 2015
3 votes
13.0k views
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