<span>16u = 1600</span>
<span>u=1600/16</span>
<span>u=100</span>
<span>3080/v = 154</span>
<span>V= 3080/154</span>
<span>V=20</span>
<span>W+175 = 12000/24</span>
<span>W+175= 500</span>
<span>W=500-175</span>
<span>W=325</span>
1. 4590:15 =306
2. 3660:12=305
3. 306+305=611
4. 306-305=1
ответ 1
1) а²+2ав+в² = (а+в)(а+в)= (1,4+0,7)(1,4+0,7)=4,41
2)а²-2ав+в²= (а-в)(а-в)=(1,4-0,7)(1,4-0,7)=0,49
Делим площадь на ширину: 4800/80=60 дм