To convert a mass from grams (g) to kilograms (kg), you need to know the basic conversion factor between these two units.
1 kilogram (kg) is equal to 1000 grams (g).
Given that we have a mass of 129 grams (g), we can use the conversion factor to find the equivalent mass in kilograms.
So, we take the mass in grams and divide by 1000 to convert to kilograms:
[tex]\[ \text{Mass in kilograms} = \frac{\text{Mass in grams}}{1000} \][/tex]
Substituting the given mass:
[tex]\[ \text{Mass in kilograms} = \frac{129 \, \text{g}}{1000} \][/tex]
This gives us:
[tex]\[ \text{Mass in kilograms} = 0.129 \, \text{kg} \][/tex]
Therefore, the mass of the ball is:
[tex]\[ 0.129 \, \text{kg} \][/tex]
The correct answer from the given options is:
[tex]\[ 0.129 \, \text{kg} \][/tex]
So, the ball's mass converted to kilograms is [tex]\(0.129 \, \text{kg}\)[/tex].
