1 Answer

Sean Stopnik · Answer 1 · 2023-10-02T04:19:10+0000

Step 1

Standard notation of a number is when a number is written with only number digits and not in scientific notation.

E.g 1235679 is in standard notation

1.235679 x 10^6 is in scientific notation

Step 2

Write 6.43 x 10^7 in standard notation

$\begin{gathered} 10^7=\text{ 10000}000 \\ 6.43\text{ x 10000000= 64,300,000} \end{gathered}$

Hence the answer is option B

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