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Mathematics 18 Online
OpenStudy (testing123guest):

help plz

OpenStudy (testing123guest):

OpenStudy (michele_laino):

hint: \[\Large 5 \times {10^6} \times 473 = \left( {5 \times 473} \right) \times {10^6} = ...?\]

OpenStudy (testing123guest):

i dont know i am not good at this stuff

OpenStudy (michele_laino):

hint: \[\Large 5 \times 473 = 2365 \cong 2400 = 2.4 \times {10^3}\]

OpenStudy (testing123guest):

2.4×10^3 is not one of the answers

OpenStudy (michele_laino):

you have to do this multiplication: \[\large 5 \times {10^6} \times 473 = \left( {5 \times 473} \right) \times {10^6} = \left( {2.4 \times {{10}^3}} \right) \times {10^6} = ...?\]

OpenStudy (michele_laino):

more precisely: \[\large 5 \times {10^6} \times 473 = \left( {5 \times 473} \right) \times {10^6} \cong \left( {2.4 \times {{10}^3}} \right) \times {10^6} = ...?\]

OpenStudy (testing123guest):

2400000000

OpenStudy (testing123guest):

@Michele_Laino plz man i need help

OpenStudy (michele_laino):

yes! correct! we can write that result using scientific notation as below: \[\large \begin{gathered} 5 \times {10^6} \times 473 = \left( {5 \times 473} \right) \times {10^6} \cong \left( {2.4 \times {{10}^3}} \right) \times {10^6} = \hfill \\ \hfill \\ = 2.4 \times {10^9} \hfill \\ \end{gathered} \]

OpenStudy (michele_laino):

\[\begin{gathered} 5 \times {10^6} \times 473 = \left( {5 \times 473} \right) \times {10^6} \cong \left( {2.4 \times {{10}^3}} \right) \times {10^6} = \hfill \\ \hfill \\ = 2.4 \times {10^9} \hfill \\ \end{gathered} \]

OpenStudy (testing123guest):

thz man u rock

OpenStudy (michele_laino):

:)

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