sophiaa23
21.02.2020 •
Mathematics
Is Dana school closes a phone tree is used contact each students family the secretary calls three families then each family calls 3 other families and so on, how many families will be notified by the sixth round of calls?
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Ответ:
1*3^6 or 2187
Step-by-step explanation:
1*3=3
3*3=9
9*3=27
27*3=81
81*3=243
243*3=729
729*3=2187
Ответ:
b
Step-by-step explanation:
no explanation