Ok so I am gonna help you with this question I hope it helps you okay!
The scale is likely to show the mass is either 270.9g or 245.1g
Step-by-step explanation:
Actual mass = 258g
Percent error = 5% = ±0.05
Mass shown by scale = Actual mass*percent error

Therefore,
Mass shown by scale = 258+12.9 , Mass shown by scale = 258-12.9
Mass shown by scale = 270.9g , Mass shown by scale = 245.1g
The scale is likely to show the mass is either 270.9g or 245.1g
Keywords: error, percentage
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There no other figure but can take a property that is linear pair or linear pair axiom
x = 109°
3*180° - 100° - 102° - 108° - 121° = 109°
Answer: Ricardo y yo somos