#### Answer

$10^{13}$

#### Work Step by Step

To multiply powers of 10, add the exponents.
$10^4\times10^9=10^{4+9}=10^{13}$

Published by
Brooks Cole

ISBN 10:
1285199197

ISBN 13:
978-1-28519-919-1

$10^{13}$

To multiply powers of 10, add the exponents.
$10^4\times10^9=10^{4+9}=10^{13}$

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