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14-10-2021
Mathematics

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the value Q of a material is directly proportional to the square of its weight W. if a material weighing 20kg is worth $500, find the value of a material weighing 5kg

Respuesta :

14-10-2021

Answer:

125$

Step-by-step explanation:

if it's proportional that means it will move up or down in equal amounts

going down from 20 to 5 kg means I divided by 4

so I can also divide 500 by 4 and get 125$

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