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Triangular numbers can be represented with equilateral triangles formed by dots. The first five triangular numbers are 1, 3, 6, 10, and 15. Is there a direct variation between a triangular number and its
answered Jun 28, 2017
3 votes
143k views
PLEASE DON'T DELETE THIS QUESTION. Am I correct in the science worksheet above? Please help, it's due tomorrow
answered Apr 20, 2017
1 vote
48.0k views
Black holes are A. New stars B. Young stars C. Medium-aged stars D. Old stars (<==== I think this one.)
answered Feb 20, 2017
3 votes
165k views
Bones in your joints are covered with a smooth and slippery material called cartilage. true or false. .
answered Jan 15, 2017
5 votes
55.3k views
What did the Einstein-Szilard letter warn President Roosevelt about in 1939? a. that the US was secretly researching nuclear weapons b. that Germany was researching nuclear weapons c. that the US planned
answered May 1, 2016
2 votes
130k views
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