Question

A thermometer shows a temperature of -20 3/4 degrees. A chemist recorded this temperature in her notebook using a decimal. Which number did the chemist write in the notebook

Answer 1

To find the answer use this: 20 3/4 (chemist wrote 20.75) so it equals  -77/4 =-19.25
What's showing up there is simplifying the fraction.

So the answer to the problem would be -19.25 degrees.