What is the difference between an irrational and a rational number? can a number be both irrational and rational? explain.

An irrational number is one that has no defined ending. EVER. Meaning that as far as we calculate, there will always be infinite more numbers extending away. A rational number is one that has a defined ending, or at least one that we can see. There are two main types: a repeating decimal, or a terminating decimal. An example of a repeating decimal would be 2/3, or 0.6666666 repeating. This number goes on forever, but we know what each number is, so that's okay. An example of a terminating decimal is one that just...ends, such as 1/2, which in decimal form is just 0.5.

Hope this helped :)

you can use a^2+ b^2=c^2

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21