A number written in scientific notation has the form $a{10}^k,$ where $1a<mn\; id="EditorElement\_1147052">1</mn><mn\; id="EditorElement\_1147053">0</mn>$ and $k$ is an integer, that is$,k$ is one of $...-3,-2,-1,0,1,2,3$dots

Part C

Now consider the expression $4\mathrm{.}0{10}^3+4{10}^2$ Determine the values of a and $k$ when the value of this expression is written in scientific notation.

Enter a and $k,$ separated by commas.

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$A$

$?$

$a,k$

Part D

Finally, consider the expression

$\frac{(6\mathrm{.}67{10}^{-11})(5\mathrm{.}97{10}^{24})}{(6\mathrm{.}38{10}^6{)}^2}$

Determine the values of a and $k$ when the value of this expression is written in scientific notation

Enter a and $k$; separated by commas.

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