There are four blue to red one brown one black one white and three green crayons in a box what is the probability of picking a red crayon putting it back and then picking a second red crayon

How can you decide witch operations to use to slice a two step equation

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?

Use the squared identities to simplify sin^2x cos^2x