9 ÷ 2one-fourth
A. 7three-fourths
B. four-ninths
C. 4
D. one-fourth
To divide a fraction by another fraction, we multiply the first fraction by the reciprocal of the second fraction.
So, 9 ÷ 2one-fourth can be written as:
9 * 4two-one / 2
= 9 * 9 / 2
= 81 / 2
= 40one-half
Therefore, the answer is not one of the given options. The answer is 40one-half.