What is an inference? A prediction of test results before an experiment

A retest of experimental results to make them reliable

Background research completed with questioning

A conclusion derived from evidence and logical reasoning

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year