30,(8) = 30 целых 8/9 = 278/9
- - - - - - - - - - - - - - - - - - - - - - - - -
а) 10% = 10/100 = 1/10
278/9 - 1/10 * 278/9 = 278/9 - 278/90 = 2780/90 - 278/90 = 2502/90 = 278/10 = 27 целых 8/10 = 27 целых 4/5
б) 62% = 62/100 = 31/50
278/9 - 31/50 * 278/9 = 278/9 - 8618/450 = 13900/450 - 8618/450 = 5282/450 = 2641/225 = 11 целых 166/225
в) 90% = 90/100 = 9/10
278/9 - 9/10 * 278/9 = 278/9 - 278/10 = 2780/90 - 2502/90 = 278/90 = 3 целых 8/90 = 3 целых 4/45
1) 15 + 7 = 22 плаща.
2) 22 + 15 = 37 пальто.
<span>Сумма вертикальных углов МОЕ и РОК образованных при пересечении прямых МК и РЕ,рана 198 градусам.Найдите угол МОР</span>
<span>y−154=386
у=386 + 154
у= 540</span>
1)
15% = 0,15,
6,4% = 0,064,
35% = 0,35,
116% = 1,16,
105% = 1,05,
220% = 2,2,
2)
17/20 = 85/100 = 85%,
11/25 = 44/100 = 44%,
21/50 = 42/100 = 42%,
0,05 = 5%,
0,74 = 74%,
1 1/2 = 3/2 = 150/100 = 150%,
1 3/5 = 8/5 = 160/100 = 160%,
2 3/25 = 53/25 = 212/100 = 212%