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ex 10,11,12,13,14 dau coroana

Ex 1011121314 Dau Coroana class=

Răspuns :

2³⁴:2³²+1+1+25-2³=4+1+1+25-8=23

(2x-1)<7  2x<8    x<4   x∈{0,1,2,3}
2x-1=7     2x=8   x=4

13700*7/100=137*7=959
13700-959=12741

306km=306000m
v=s/t⇒t=s/v⇒306000/340=900sec=15min