1.(3;0) (4;-2)(-1;8) 2.(2;1) (-3;-11.5)(3;3.5)
(15,964:5,2-1,2)*0,1
1)15,964÷5,2=3,07
2)3,07-1,2=1,87
3)1,87*0,1=0,187
-1/2 * (-2/3) * (-3/4) * (-4/5) = 1/3
1) -1/2 * (-2/3) = 2/6 = 1/3
2) (-3/4) * (-4/5) = 12/20 = 3/5
3) 1/3 * 3/5 = 3/15 = 1/3
X(x-9)<0
решаем на координатной прямой, отмечая точки 0 и 9.
0<x<9