How to multiply and divide rational numbers?

To multiply two fractions, you multiply the numbers straight across. The numerators stick together and multiply; the denominators stick together and multiply. For example:

1/2 times 3/4 = (1 times 3)/(2 times 4) = 3/8

After multiplying, we reduce if possible. In this case, we cannot reduce, so we're done with this example.

To divide two fractions, you would flip the second fraction and then multiply straight across. So, for example,

5/7 divided by 7/8 = (5/7) times (8/7) = (5 times 8)/(7 times 7) = 40/49

Notice how the steps are similar as before. The only difference really is that we flipped the second fraction.

idn

step-by-step explanation:

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.