si 10 obreros construyen una casa em 6 meses , ¿cuanto tiempo demoraran en construir una casa similar con 15 obreros , trabajando , con las mismas horas diarias

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)