Use the unit fractions 36 in.
1 yd
and
2.54 cm
1 in.
Convert 487.68 cm to yd.
487.68 cm is yd.
(Type an integer or decimal rounded to the nearest hundredth as needed.)

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.