Is 9/31 an irrational number
2 answers:
Answer:
No, 9/31 is not an irrational number.
Step-by-step explanation:
A real number is called rational number when it can be expressed in the form of ,
Where, both p and q are integers and q ≠ 0,
Otherwise, it is called irrational number.
Here, the given number is,
Since,both 9 and 31 are integers,
Also, 31 ≠ 0,
⇒ 9/31 is a rational number,
Hence, It is not an irrational number.
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Answer: A.
Another way to solve by factoring 1/4.
ANSWER
A
EXPLANATION.
The given function is
Let
Solve for x.
Take cubic root of both sides,
x is defined for all real values of y.
The range refers to the values of y, for which x is defined.
Hence the range is all real numbers.
In interval notation, we write this as,
The correct choice is A.