1) 100 000 + 20 000 = 120 000
2) 127 900- 120 000= 7 900 муравьев ведут хозяйство
Вложение ..........................................................
A + b = 61500
b + c = 42700
a + c = 44200
c = 44200 - a
b + 44200 - a = 42700
b = -1500 + a
2a = 60 000
a = 30 000(km) - s baykal
b = 31 500(km) - s big bear's lake
c = 14 200(km) - s chad
z = 75 700 * 5 = 378 500(km) - s каспийского моря
1сп.30-5-7=18или 30-5=25,25-7=18
<span>2сп.30-(5+7)=18</span>
<span>y=(5-2x)^(1/3)
y` = 1/3 * </span>(5-2x)^(-2/3) * (-2) = -2/3 * (5-2x)^(-2/3)