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31.07.2019 •
Mathematics
What are the solutions of the equation x^2-1=0
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Ответ:
Step-by-step explanation:
Well 90 is only 30 more than 60 which is half of sixty.
so divide 60 by 2 to get 30 and divide 16 by 2 and get 8.
then add 30 to 60 to get 90 and add 8 to 16 to get 24.
ans. 24 minutes of commercials