Ответ:
t= 80c
Объяснение:
t1= 120c
t2= 240c
S= V*t =>t =S/V
V1=S/t1
V2=S/t2
V=V1+V2=S*(1/t1 +1/t2)
t=1/(1/t1 +1/t2)
t= 1/(1/120+ 1/240)= 80c
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Ответ:
t= 80c
Объяснение:
t1= 120c
t2= 240c
S= V*t =>t =S/V
V1=S/t1
V2=S/t2
V=V1+V2=S*(1/t1 +1/t2)
t=1/(1/t1 +1/t2)
t= 1/(1/120+ 1/240)= 80c