What’s the answer to number 4 ?

Answer:
[tex]4.36*10^-^1[/tex]
Step-by-step explanation:
Given:
[tex](3.6*10^-^2)+(4.0*10^-^1)[/tex]
Make the power of '10' equal by shifting the decimal place of any one value.
[tex](0.36*10^-^1)+(4.0*10^-^1)[/tex]
Taking the '[tex]10^-^1[/tex]' common
[tex]10^-^1*(0.36+4.0)[/tex]
Adding the values in the bracket gives:
[tex]4.36*10^-^1[/tex]
[tex]\large\text{Hey there!}[/tex]
[tex]\mathsf{(3.6\times10^{-2}) + (4.0\times10^{-1})}[/tex]
[tex]\bullet\ \mathsf{10^{-2}=\dfrac{1}{100}}[/tex]
[tex]\bullet \ \mathsf{10^{-1}= \dfrac{1}{10}}[/tex]
[tex]\mathsf{(3.6\times\dfrac{1}{100})+(4\times\dfrac{1}{10})}[/tex]
[tex]\bullet \ \mathsf{3.6\times\dfrac{1}{100}=0.036}[/tex]
[tex]\bullet\ \mathsf{4\times\dfrac{1}{10}=\dfrac{2}{5}}[/tex]
[tex]\mathsf{\bf{0.036+\dfrac{2}{5}}= \underline{0.436}}[/tex]
[tex]\boxed{\boxed{\bf{Answer: \boxed{\mathsf{\bf{\underline{0.436}}}}}}}\checkmark[/tex] [tex]\boxed{\boxed{\mathsf{Or\ you\ could\ say\ if\ its\ easier\ for\ you: \boxed{\mathsf{\bf{\underline{4.36\times 10^{-1}}}}}}}}\checkmark[/tex]
[tex]\large\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\dag\dfrac{\frak{LoveYourselfFirst}}{:)}[/tex]