What is the measure of each exterior angle of a 20-gon ​

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

9/10 divide by -3/15 as a mixed number

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?