Which expression is equal to 21,340?

2.1340 x 10^-4

Step-by-step explanation:

The numerical value 21,340 can be expressed in the form of a scientific notation.

To convert a number into scientific notation, we need to move the decimal place to the right side from the first number of the value from its left side.

Here in this case, we will put a decimal to the right side of 2 and then the rest of the values will come after the decimal.

Count the number of values and write it as the negative power of the number.

Therefore, 21,340 can be expressed as 2.1340 x 10^-4.

42

step-by-step explanation:

256/6=42