Calcular o esforço horizontal sobre a estrutura do ventilador da Figura. Desprezar a perda de carga entre as seções (1) e (2). Dados: D2=0,38 m; v2= 30 m/s; v1= 0 m/s; peso específico=12,7 N/m3

Solve the system of equations. y= 2x y= x^2 - 15

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?

Atransformation t : (x,y) (x-5,y +3) the image of a(2,-1) is