Fabio is trying to show his teacher why the product of two rational numbers is another rational number. His first steps are shown. Which is the best method Fabio could use to proceed?

a/b x c/d= a x c/b x d

Show that ac and bd are integers

Step-by-step explanation:

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

figure c

step-by-step explanation:

hope this .