Seudónimo Seudónimo

17-02-2017
Mathematics

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Enrollment at Roosevelt Middle School is being reviewed by the school staff. The table gives the numbers of boys and girls in grades 6 to 9.

Grade Girls Boys
6 9 12
7 12 18
8 15 20
9 25 36

In which two grades is the relationship between the numbers of girls and boys proportional?

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ppate147 ppate147

28-02-2017

Grades 6 and 8 have proportional ratio

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