Question

Hi ppl of brainly. I need some help with my math assignment. explain if u can (if u can't, that's okay ) if you dont know it. please dont answer it. if u have any questions about the question, please drop in a comment!

Answer 1

Answer:

17.156

Step-by-step explanation:

A rational number has has a terminating decimal expansion or a decimal expansion of non-terminating repeating digits. Here, the decimal expansion is terminating, so it is a rational number.

Answer 2

Answer:

C. 17.156

Step-by-step explanation:

A rational number is any number that can be expressed as a fraction. So for example, since $\sqrt{2}$ cant be expressed as a fraction, it isn't rational. A number like 1.25 on the other hand IS rational as it can be expressed as $\frac{5}{4}$ or $\frac{125}{100}$.

Option C can be expressed as $\frac{17156}{1000}$, so it must be rational.

- Note that if a number has a finite amount of digits after the decimal (ie it doesn't go on forever like option B), it can be represented as a fraction and thus is rational.