3 1/12 + 4 11/15 + 1 3/5 = 8 + 5/60 + 44/60 + 36/60 = 8 + 85/60 = 9 5/12.
Ответ: 9 5/12 тонн.
0,5*(-9)^4+1,1*(-9)^3-28==3280,5-801,9-28=2450,6
а)(0.3*0.3)*10=0,9 б) (0,2*0.2*0.2)*100=0,8 в)(0.1*0.1)+(0.1*0.1*0.1)=0,011 г)(4*4)*(0.1*0.1*0.1)=0,016 д)(2,5*2,5)*1000=6250 е) (0.6*0.6)+(0.8*0.8)-(0.2*0.2*0.2)=0,36+0,64-0,008=0,992