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Dan has 20 books in his library. He bought several books at a yard sale over the weekend. He now has 71 books in his library. How many books did he buy at the yard sale?
answered
May 19, 2018
Mathematics
high-school
3
votes
211k
views
Write a system of linear equations. solve by graphing. solve analytically by elimination.
answered
Jan 20, 2018
Mathematics
college
5
votes
116k
views
What is the advantage of having a storage organ such as a crop?
answered
Jan 17, 2018
Biology
middle-school
3
votes
159k
views
The population of Clarksville is about 6000 people.What is the population written as a whole number multiplied by a power of ten?
answered
Dec 16, 2016
Mathematics
middle-school
7
votes
103k
views
What are factors of 6300 that have a sum of -160. I am trying to solve the problem x^2 -160x +6300
answered
Jan 16, 2016
Mathematics
high-school
5
votes
50.0k
views
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