Answer:
A rational number is a number that can be express as the ratio of two integers.
Step-by-step explanation:
A number that cannot be expressed that way is irrational. For example, one third in decimal form is 0.33333333333333 (the threes go on forever).
Answer:
If the length of each side of a triangle is doubled then its perimeter is also doubled.
It is rounded to the number 2,000,000.