Liam and 2 of his friends have backpacks. the backpacks have masses of 6 kilograms,4 kilograms, and 5 kilograms. what is the total mass of three backpacks

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?