To write 0000045 in scientific notation, you need to move the decimal point to the right until there is a nonzero digit to its left. In this case, it would be 4.5. Since you moved the decimal point five places to the right, the exponent will be -5. Therefore, 0000045 in scientific notation is 4.5 x 10^(-5).
4.5 x 10 -5 =======
To write 0000045 in scientific notation, you need to move the decimal point to the right until there is a nonzero digit to its left. In this case, it would be 4.5. Since you moved the decimal point five places to the right, the exponent will be -5. Therefore, 0000045 in scientific notation is 4.5 x 10^(-5).
4.5 x 10 -5 =======
1x10^-6 = .000001 4.5x10^-6 = .0000045