The notation "6.639E–5" represents a number in scientific notation, where "E" stands for "exponent," indicating that the number should be multiplied by 10 to the power of –5.
To convert it to standard form:
- The number is 6.639.
- The "E–5" means you move the decimal point 5 places to the left.
So, moving the decimal point in 6.639 five places to the left results in:
0.00006639
Thus, 6.639E–5 in standard form is 0.00006639.