Answer
2
Work Step by Step
47,000 lb has 2 non-zero digits. The zeroes to the right are not tagged, so they are not significant.
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 4 - Section 4.1 - Approximate Numbers and Accuracy - Exercise - Page 163: 2
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