W załączniku 3 zadania.
zad1. √5/9 - √5-3/5 + 2/15=5√5/45 - 9√5-27/45 + 6/45=-4√5-21/45
zad2.3,80-------100%
x---------20%
x=0,76
3,80+0,76=4,56 cena mandarynek
4.56-----------100%
3,80-----------x
x=83,(33)%
zad3.1,12--------------56%
x----------------100%
x=2 cena biletu bez zniszki
po 50% zniszce 1zl.
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zad1. √5/9 - √5-3/5 + 2/15=5√5/45 - 9√5-27/45 + 6/45=-4√5-21/45
zad2.3,80-------100%
x---------20%
x=0,76
3,80+0,76=4,56 cena mandarynek
4.56-----------100%
3,80-----------x
x=83,(33)%
zad3.1,12--------------56%
x----------------100%
x=2 cena biletu bez zniszki
po 50% zniszce 1zl.