A poll asked 12 men in two age groups, 30 and younger and older than 30, whether they had facial hair (mustache, bears, sideburn
s, etc.). The results are recorded in the table.
1 answer:
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Answer:
6r+7=13+7r
6r+7=7r+13
6r+7−7r=7r+13−7r
−r+7=13
−r+7−7=13−7
−r=6
=
r=−6
Step-by-step explanation:
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