which of these is a rational number
A. radical 2
B. radical 3
C. radical 4
D. radical 5
radical is square root
CAN SOMEBODY HELP ME
√4 = 2 , so it is rational
The other three are irrational
To determine which of these options is a rational number, we need to understand what a rational number is. A rational number is any number that can be expressed as a ratio of two integers (a fraction), where the denominator is not zero.
Let's evaluate each option:
A. radical 2: The square root of 2 (√2) is an irrational number since it cannot be expressed as a fraction of two integers.
B. radical 3: The square root of 3 (√3) is also an irrational number because it cannot be expressed as a ratio of two integers.
C. radical 4: The square root of 4 (√4) is equal to 2, which is a rational number. This is because 2 can be written as the ratio of two integers (2/1).
D. radical 5: The square root of 5 (√5) is an irrational number as it cannot be expressed as a fraction of two integers.
Therefore, the rational number among the options provided is C. radical 4.