Пошаговое
объяснение:
10¹ = 10
10^0 = 1; 10^-1 = 1/10; 10^-2 = 1/10² = 1/100;
10^-3 = 1/10³ = 1/1000
10^-4 = 1/10⁴ = 1/10000
а)
3*1 + 2*1/10 + 5*1/100 + 6*1/1000
3 + 2/10 + 5/100 + 6/1000 = 3 + 200/1000 + 50/1000 + 6/1000 =
3 + 256/1000 = 3 + 32/125 = 3. 32/125 = 3,256
б)
4*1/100 + 5*1/10 + 7*1 =
4/100 + 5/10 + 7 =
1/25 + 1/2 + 7 =
2/50 + 25/50 + 7 =
7. 27/50 = 7,54
в)
4*10 + 7*1 + 6*1/100 + 5*1/1000 =
40 + 7 + 6/100 + 5/1000 = 47 + 3/50 + 1/200 =
47 + 12/200 + 1/200 =
47 + 13/200 = 47. 13/200 = 47,065
г)
1 + 6*1/10 + 4*1/100 + 5*1/10000 =
1 + 6/10 + 4/100 + 5/10000 =
1 + 6/10 + 4/100 + 1/2000 = 1 + 1200/2000 + 80/2000 + 1/2000 =
1 + 1281/2000 = 1. 1281/2000 = 1,6405
при х=7
-15*6-0,6=-80-0,6=-7,4