Question

What is 0.0000000405 in standard notation

Answer 1

 0.0000000405 in scientific notation is 4.05 x 10^-8 

You would move the decimal until after the 4, which will be 8 times. And since the zeros are in front so the number is really small, the exponent will be a negative. 

Answer 2

2. 405000000. hope that helped