Question

Express this number in scientific notation.
\[\text{19 hundred-thousandths}\]

Answer 1

The term "19 hundred-thousandths" can be expressed numerically as:

\[
19 \times \frac{1}{100000} = \frac{19}{100000}
\]

To convert this into decimal form, we can perform the division:

\[
\frac{19}{100000} = 0.00019
\]

Now, we will express 0.00019 in scientific notation. In scientific notation, we represent a number as \(a \times 10^n\), where \(1 \leq a < 10\) and \(n\) is an integer.

To convert 0.00019 to scientific notation, we can move the decimal point to the right until we have a number between 1 and 10:

\[
0.00019 = 1.9 \times 10^{-4}
\]

Thus, the number "19 hundred-thousandths" expressed in scientific notation is:

\[
\boxed{1.9 \times 10^{-4}}
\]