Sec^4o- tan^4o = 1+2 tan^2o

What is x and y (use substitution? ) 5x+3y=38 and y=3x+8?

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

What is the value of x in the following equation? -3x-2=2x+8