An angle measures 12° less than three times it’s supplement. Find the measure of the angle

What is the product? (x2+3y+7) [yy+1)

Can someone answer this question? : )

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