The ratio of students who have a dog to students who do not have a dog is 3 : 7 and this can be determined by using the arithmetic operations.
Given :
Twelve of the 28 students in a class have a dog.
Arithmetic operations can be used to determine the ratio of students who have a dog to students who do not have a dog.
The following steps can be used to determine the ratio of students who have a dog to students who do not have a dog:
Step 1 : Divide 12 by 28 that is, students who have a dog by students who do not have a dog.
[tex]=\dfrac{12}{28}[/tex]
Step 2 - Further simplify the above expression.
[tex]=\dfrac{3}{7}[/tex]
Therefore, the ratio of students who have a dog to students who do not have a dog is 3 : 7.
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https://brainly.com/question/1009324
