Three sides of a triangle have lengths of 4x-3, 2x+1 and x+5. write an expression representing the perimeter in terms of x. p=?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i