Pls answer :(

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If a is a nonzero real number then the reciprocal of a is

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?

A10 inch cookie cake is divided into 8 slices. what is the area of 3 slices