Question

The measurement 831.90 expressed in scientific notation becomes

O 8.3190 x 10¹
O 8.3190 x 10²
O 0.83190 x 10³
O 8.3190 x 10⁻²

Answer 1

To express 831.90 in scientific notation, move the decimal point 2 places to the left and write the resulting number with a positive exponent of 10.

Step-by-step explanation:

Scientific notation is a way of writing numbers that are too large or small to be conveniently written as a decimal. To express 831.90 in scientific notation, we need to move the decimal point until we have a number between 1 and 10. In this case, we move the decimal point 2 places to the left to get 8.3190. Since we moved the decimal point to the left, the exponent will be positive. Therefore, the measurement 831.90 expressed in scientific notation is 8.3190 x 10².