<span>48900:80=</span>611 (ост. 20)
80*611+120=48900
4+4+3+3+1+1= 4*2+3*2+1*2= 2*(4+3+1)=16
1дм = 10 см
10 : 5 = 2 см
ответ; 2 см
Удачи!
=√18*(cos²(7π/8)-sin²(7π/8))=√18*cos(2*(7π/8)=√18*cos(7π/4)=
=√18*cos(8π/4-π/4)=√18*cos(2π-π/4)=√18*cos(π/4)=√18*(√2/2)=√36/2=6/2=3
20/15+68/8=160/120+1020/120=1180/120=118/12=59