Solve x²-10x-20=0 using completing the square

Empty box + box + empty box fill in the box is equal to 30 how

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?

Shannon drove for 540 minutes. if she traveled 65 miles per hour, how many total miles did she travel?