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bbygxo226
31.07.2019 •
Mathematics
Tell whether each statement is true or false. then explain your resoning. in m+8 =12, the variable m can have any value and be a solution. answer qiuk
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Ответ:
to make sure that m has any other solution take 12 and minus it from 8.
You can only get 4 and 4 only
Ответ:
an = a1 + (n – 1)d.
The first term is a1, the common difference is d, and the number of terms is n. an is the final number we are looking for.
We shall substitute in the common difference and 2 since every hour 2 more people will know. Also the first term is equal to 2. an is 450 because that's what we are looking for.
the equation looks like 450= 2 + (n – 1)2. Now we evaluate. n = 225. 225 terms will pass, then all 450 students will know the rumor. Each term will equal 1 hour . 225 hours converts to 9 full days and 9 hours. So it will take 9 days and 9 hours for every student to know the rumor at that rate.