What you are asking is not clear, but I think that you're asking, "Why do you use x10 with scientific notation (Correct me if I'm wrong). The x10 is used because if you multiply something by ten, the decimal place of the number moves one to the right. If you divide a number by ten the decimal place moves one to the left. The x10(to whatever number) is just an easier way to symbolize that decimal place moving
4.0600000000000005 X10 ^8
8 x10^1
789.32 x 10 = 7,893.27,893.2 in scientific notation = 7.8932e+3
0.0000072 in scientific notation is 7.2 × 10-6
The scientific notation for 0.00000003 is 3 x 10^-8.
It is: 1.00448442 x10^7
4.0600000000000005 X10 ^8
8 x10^1
789.32 x 10 = 7,893.27,893.2 in scientific notation = 7.8932e+3
If it is written in scientific notation it will have x10 to a certain power if it is standard it won't
0.0000072 in scientific notation is 7.2 × 10-6
The scientific notation for 0.00000003 is 3 x 10^-8.
5.1 x10-7
22,880,000=2.288 x10^77
5.0 x10 6
9.0 x10^-3
1.71 x10^-6