The value of the expression (4.5 x 10²) + (6.0x10³) is 6.45 x 10³. Therefore, the correct option is C.
Scientific notation:
The given expression is the sum of two numbers written in scientific notation.
[tex](4.5\times 10^2)+(6.0\times 10^3)[/tex]
It can be written as:
[tex](0.45\times 10\times 10^2)+(6.0\times 10^3)[/tex]
[tex]=(0.45\times 10^3)+(6.0\times 10^3)[/tex]
[tex]=(0.45+6.0)\times 10^3[/tex]
[tex]=6.45\times 10^3[/tex]
The required expression in scientific notation is [tex]6.45\times 10^3[/tex].
Therefore, the correct option is C.
Find out more about 'Scientific notation' here:
https://brainly.com/question/11276767
