Answer
$$1270 \ mg$$
Work Step by Step
Since $1\ oz= 28.35 \ g$ and $1 \ g=1000 \ mg $, we have
$$0.045 \ oz= 0.045 \times 28.35 \ g = 0.045 \times 28.3\times 1000 \ mg\\
=1270 \ mg$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 3 - Section 3.7 - Metric and U.S. Conversion - Exercise - Page 155: 20
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