Why is 0.71875 a rational number

Mathematics

2 answers:

MrMuchimi3 years ago

6 0

Answer:

Because it is terminating.

Step-by-step explanation:

0.71875 is rational because it is terminating (has a clear end). If it were a bunch of random numbers that never ended, then it would be irrational.

slavikrds [6]3 years ago

5 0

Answer:

It can be written as a fraction with integer numerals.

Step-by-step explanation:

One easy rule to follow is 'Can it be written as a fraction with integer denominators and numerators?'. If so, then yes, it is rational.

Something like pi, which can not be represented as a fraction is not rational.

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$(1,\ 5^2),\ (2,\ 6^2),\ (3,\ 7^2),\ (4,\ 8^2),\ and\ (5,\ 9^2) \\ \\ =(1,\ (1+4)^2),\ (2,\ (2+4)^2),\ (3,\ (3+4)^2),\ (4,\ (4+4)^2),\ \\ and\ (5,\ (5+4)^2)$

Therefore, the rule that represents this function is $y=(x+4)^2$ .</span>