Первое 2т600кг ×5 =13000 потом 13000 -926=12074:100=12074
1,6
обратно число
1/1,6=1/(16/10)=10/16=5/8
Ответ:
1) 8000×6×12 =576 000 м 3
2)300см×0.2×15см =900см3= 9 м3
3)5×5×5=125м3
Решение:
7х + 4 ≤ 8х - 7
<span>7х - 8х </span>≤ - 4<span> - 7
</span>- х ≤ - 11
х ≥ 11
х ∈ [11; + ∞ )
Ответ: [11; + ∞).
1) 3 1/4 * 8 = 13/4 * 8 = 104 / 8 = 13
2) 5 1/3 * 6 = 16/3 * 6 = 78 / 3 = 26
3) 4 * 1 1/2 = 4 * 3/2 = 12/2 = 6
4) 7 * 1 1/3 = 7 * 4/3 = 28 / 3 = 9 1/3
5) 2 3/8 *6 = 19/8 * 6 = 114/8 = 14 2/8
6) 1 3/4 *2 = 7/4 * 2 = 14/4 = 7/2 = 3 1/2
7) 3 * 2 1/9 = 3 * 19/9 = 57/9 = 6 3/9
8) 8 * 3 1/2 = 8 * 7/2 = 56/2 = 28