Question

question
convert 0.00000078 to scientific notation with two significant figures.
answer
7.8×10
7.8×10⁻⁸
7.8×10⁷
0.78×10⁻⁶
i dont know yet

Explanation:

Step1: Move decimal point

Move the decimal point to the right until we have a number between 1 and 10. For 0.00000078, moving the decimal 7 places to the right gives 7.8.

Step2: Determine exponent

Since we moved the decimal point 7 places to the right for a number less than 1, the exponent of 10 is - 7.

Answer:

$7.8\times10^{-7}$