Răspuns:
52-[51:(4x5-3)+6*3]=52-(51:17+18)=52-21=31
2x{1+1/2*[2+1/4:0.3125]=2x[1+1/2*(2+4/5)]=2x12/5 = 24/5
a1+a2+....a10/10=23.61 rezulta a1+a2+a3+a4+a5+++a10=23.61*10
a1+a2+a3+a4/4=1.101 rezulta a1+a2+a3+a4=4*1.01
inlocuind rezulta a5+a6+a7+a8+a9+a10=236.1-4.04=232,06
atunci media aritmetica = a5+a6+a7+a8+a9+a10=232.06/6=38,67(6)
l=2/3L
h=3/4l=1/2L
L+l+h = 6,5
L+2/3L+ L/2=6.5 rezulta 13L=39 rezulta L=3 m
l=2 m
h=3/2m
V= L*l*h=30*20*30/2 dmcubi = 9000 dm cubi = 9000 litri
Explicație pas cu pas: