There are 3 boys for every 4 girls in a classroom. If there are 9 boys, how many girls are in the classroom? PLEASE HELP!!

36 girls in the class

12 girls are in the classroom.

Step-by-step explanation:

We find out that the ratio is 3:4 based upon the question.

If there's 9 boys then the ratio is incomplete however you just need complete it based on the information given.

So, 3:4

      9:?

9 / 3 = 3

4 x 3 - 12 girls

Thus, there being 12 girls in the classroom.

To check:

9:12;

9 / 3 = 3

12 / = 4

So the ratio still ends up being 3:4 therefore 9:12 is equivalent and correct!

Hope this helped! Have a great day or night wherever you are, stay safe!

the discriminant is 64 + 4*1*12 = 112

this is prime.

step-by-step explanation: