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Summary Graad 9 Biologie (lewenswetenskap) Opsommings

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Uploaded on
February 24, 2023
Number of pages
67
Written in
2022/2023
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Summary

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Biologie
JANUARIE – MEI 2022

,Die Wetenskaplike Metode:

oBerekeninge


oTrek van tabelle


oTrek van grafieke

, Algemene berekeninge in die
wetenskaplike metode sluit in:

oGemiddeldes


oPersintasie berekeninge


oVerhoudings

, Persintasie berekeninge:
oStel ‘n verhouding van die hele hoeveelheid voor. – Byvoorbeeld - ‘n Volle maaltyd weeg 30
o120 g van hierdie maaltyd was kolhidrate
oWatter persintasie van die maaltyd was kolhidrate


Persintasie berekening voorbeeld:
𝐻𝑜𝑒𝑣𝑒𝑒𝑙ℎ𝑒𝑖𝑑 𝐾𝑜𝑙ℎ𝑖𝑑𝑟𝑎𝑡𝑒
oD.w.s Persinatasie (%) = x 100
𝑇𝑜𝑡𝑎𝑙𝑒 𝐻𝑜𝑒𝑣𝑒𝑒𝑙ℎ𝑒𝑖𝑑 𝑣𝑎𝑛 𝑚𝑎𝑎𝑙𝑡𝑦𝑑
120 𝑔𝑟𝑎𝑚
= x 100
300 𝑔𝑟𝑎𝑚

= 0,4 x 100
= 40%
40% van die maaltyd bestaan uit kolhidrate
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