<span>а) -3.8*4.06=-15,428 </span>
<span>б)26.112:6.4=4,08 </span>
<span>в)4.9:(0.07)=70</span>
г)
<span>-0.42*0.49</span>
<span>________ =3</span>
<span> (-0.24-0.25)*0.14 </span>
<span>1)-0.42*0.49=-0,2058</span>
<span>2) (-0.24-0.25)*0.14=-0,0686</span>
<span>3)-0,2058:(-0,0686)=3</span>
1)100%-55%=45%
2)18:45*100=40 (км)
Ответ:40 км длина маршрута.