We have a sum of two terms expressed in scientific notation, this sum is:
[tex]37.2\ast10^4+2.9\ast10^4[/tex]Since both terms have the same exponent or magnitude, in this case, it is 4, we can add the coefficients and keep the magnitude.
[tex]\begin{gathered} 37.2+2.9=40.1 \\ 37.2\ast10^4+2.9\ast10^4=40.1\ast10^4 \end{gathered}[/tex]In conclusion, the sum is:
[tex]40.1\cdot10^4[/tex]