hep the temperature on the ground during a plane's takeoff was -7degrees. at 38000 feet in the air, the temperature outside the plane was -29 degrees. find the difference between these two temprature.

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

If the scale factor between two circles is 2x/5y what is the ratio of their areas?