0.75 * 10^5 is not in scientific notation since the base 0.75 is smaller than 1.
The general format for scientific notation is b*10^n where b is the base and n is the exponent
If the base b is positive, then it must fit the criteria that [tex]1 \le b < 10[/tex]. So b = 1 is the smallest it can get
Here's how to convert it to scientific notation
0.75 * 10^5
(7.5 * 10^(-1)) * 10^5
7.5 * (10^(-1)*10^5)
7.5 * 10^(-1+5)
7.5 * 10^4
The number is now in scientific notation since b = 7.5 fits the interval [tex]1 \le b < 10[/tex]
