Solve by a method of your choice. A medical researcher needs 9 people to test the effectiveness of an experimental drug. If 12 people have volunteered for the test, in how many ways can 9
people be selected?
The 9 people can be selected in ways.

The 9 people can be selected one way

Step-by-step explanation:

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.

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