Which of the following represents the perimeter of the triangle pictured?

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.