What is 10E 9?

Answer 1

When you see E, it translates to "X 10^" or "times ten raised to the..."

For Example: 4E3 is the same as 4 X 103

As you can see, the "E3" part translated to "X 103"

This means that 10E9 translates to "10 X 109"which is equivalent to "1010", or "E10"

More Examples:

3E-4 --> 3 X 10-4

yE8 --> y X 108

-5Ex --> -5 X 10x