Question

write using scientific notation. 0.00319 ? × 10 enter the decimal number.

Explanation:

Step1: Recall scientific notation rules

Scientific notation is in the form \( a \times 10^n \), where \( 1 \leq |a| < 10 \) and \( n \) is an integer. For a number less than 1, we move the decimal point to the right until we get a number between 1 and 10. The number of places we move the decimal is the exponent (which will be negative).
For \( 0.00319 \), we move the decimal point 3 places to the right to get \( 3.19 \).

Step2: Determine the exponent

Since we moved the decimal 3 places to the right, the exponent \( n \) is -3. So in scientific notation, \( 0.00319 = 3.19 \times 10^{-3} \). The decimal number (the \( a \) part) is \( 3.19 \).

Answer:

\( 3.19 \) (and the exponent is \(-3\) for the complete scientific notation \( 3.19 \times 10^{-3}\))