Simplyfy (−9a − 20c) − (−15a + 3c) − (−22a − 7c)?

What is the product of the radical expression. (7-2square root) (8+2 square root)

How to write 3 tenths and 5 tenths as a decimal

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