To express 19 hundred thousandths in scientific notation, we first need to understand what this number represents. The term ‘hundred thousandths’ means we are dealing with a fraction out of 100,000. Therefore, 19 hundred thousandths can be written as:
19 / 100,000
This simplifies to:
0.00019
Now, to convert 0.00019 into scientific notation, we shift the decimal point to the right until we have a number between 1 and 10. In this case, we move the decimal 4 places to the right, giving us:
1.9
Since we moved the decimal to the right, we express this in scientific notation as:
1.9 x 10-4
Thus, 19 hundred thousandths in scientific notation is written as 1.9 x 10-4.