Answer
$$9\times 10^{-5}.$$
Work Step by Step
By adding the exponents and multiplying the like terms, we have
$$ (3 \times 10^{7})(3 \times 10^{-12})= (3)(3 )\times 10^{7-12}\\
=9\times 10^{-5}.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 2 - Section 2.6 - Scientific Notation - Exercises - Page 127: 60
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