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1. Know the parts and characteristics of particles that make up an atom.
answered
Apr 22, 2020
Chemistry
middle-school
5
votes
165k
views
Jack’s average in Math for the first nine weeks was an 88. His second nine weeks average decreased 12.5%. What was his average for the second nine weeks?
answered
Jan 9, 2019
Mathematics
middle-school
2
votes
86.1k
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