Answer:
19
Step-by-step explanation:
very understanding explanation:
10 + 9 = 19
Standard form is used to express number which are very large or small . Use of standard form make number easier to read and to do further calculation.
[tex] \sf{\red{Number \: between \: 1 \: and \: 10} × \green{10^n}}[/tex]
where n is an integer and is equal to number of digits after leftmost number.
[tex]\underline{ \underline{\green\maltese { \bf \red{Given\;Number:-}}}}[/tex]
[tex]\bull \: \: \: \: \: \: \: \sf \: 40500000000[/tex]
Insert decimal point after leftmost digit as-
[tex]\begin{gathered}\\\quad\longrightarrow\quad\sf 4.05 \\\end{gathered} [/tex]
Now count the Number after leftmost digit. There are 13 digits after leftmost digit -
[tex] \therefore \boxed{ \sf{n= 13}}[/tex]
Putting in Syntax,the standard form will be -
[tex] \therefore \boxed{ \sf{4.05 × 10^{13}}}[/tex]
