Chapter P - Section P.2 - Exponents and Scientific Notation - Exercise Set - Page 30: 89

$6.4\times10^{4}$

Work Step by Step

$(1.6\times10^{15})$$(4\times10^{-11})$ =$(1.6\times4.1\times10^{15}\times10^{-11})$ = $6.4\times10000$ =$64000$ =$6.4\times10^{4}$

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