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Dobrý deň, chcela som sa opýtať, či by ste mi vedeli poradiť v roztriedeni týchto látok medzi zmesi a chemicky čisté latky (prvky, zlúčeniny). Ja som to určila takto: Chem. Čisté latky : NaSO4* 10…
Prosím, pomohli by ste mi s touto úlohou ? Vypočítajte povrch a objem pravidelného štvorstena vysokého 4.9 cm, ktorého hrana podstavy ma dĺžku 6 cm ? Ďakujem!
Dobrý deň, vieme mi poradiť overenú metódu na zavedenie čiarky v jednoduchej vete na prvom stupni ZŠ.
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