micahpauleen748
05.05.2021 •
Mathematics
You will do a survey of at least five married couples and record the number of credit cards each person has and then test the claim that husbands have more credit cards than their wives.
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Ответ:
s=h+5
4s=6h
multiply the fisrt equation by 4
4s=4h+20
4s=6h
4h+20=6h
20=2h
h=10
s=h+5
s=10+5
s=15