What is the first step in describing what figure results when given plane intersects a given three-dimensional figure?

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

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

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?