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777dan777 [17]
3 years ago
5

rylan is testing 2 different types of nail polish on her fingernails to determine which one lasts longer. she purchases Brand A

and Brand B from the drug store. She then paints her nails with Brand A and her sister's nails with Brand B. She compares the nails polish at the end of the week and determines that Brand B last longer because there fewer chips than Brand A. Why is her conclusion not valid?
Mathematics
2 answers:
ololo11 [35]3 years ago
4 0

Answer:

b

Step-by-step explanation:

She painted her sister's nails with Brand B, not her own nails.

jok3333 [9.3K]3 years ago
3 0
Because she and her sister may have done different activities which would have possibly damaged the nail polish differently
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