ukyflyfl
07.05.2020 •
Mathematics
Mr. Dotson wants to know if the neighbors on his street would be interested in a community watch. He surveys every fourth household on the street and concluded that 70% would be interested.
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Ответ:
+9z +9z
11z - 31 = 24
+31 +31
11z = 55
÷11 ÷11
z = 5