Why is the product of two rational numbers always rational? select from the drop-down menus to correctly complete the proof. let ab and cd represent two rational numbers. this means a, b, c, and d are , and b and d are not 0. the product of the numbers is acbd , where bd is not 0. both ac and bd are , and bd is not 0. because acbd is the ratio of two , the product is a rational number.

is there any picture if not then i believe the answer is Integers, d is not zero, multiplication.

i don't know how to explain it though let me try to figure this out more if i find anything more out ill type it in the text!!

We can set up a simple ratio to solve this.

14 inches/84 cents = x inches / 48

14/84 = x/48

(14/84)*48 = (x/48)*48

(14/84)*48 = x   (the 48's on the right side cancel out)

14*48 / 84 = x

672/84 = x

8 = x

You can buy 8 inches of wire with 48 cents.

Reason this works: The price is the same per inch, so both ratios should equal each other. (if you don't understand this let me know)