M is the midpoint of AB, Q is the midpoint of AM, and T is the midpoint of QM. If the coordinates of A and B are a and b, find the coordinates of Q and T in terms of a and b

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?