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45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

The students in a class were asked how many siblings they have. the data obtained is represented in the dot plot. the number of students who have no siblings is . the number of students who have three or more siblings is .

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0)