21/3 is rational. Rational numbers are numbers that can be written as a fraction. Irrational Numbers cannot be expressed as a fraction.
It is equal to 21/2 which is a rational number
0.21 is a rational number because it can be expressed as a fraction in the form of 21/100
Well, isn't that a happy little question! 0.21 is a rational number because it can be expressed as a fraction, specifically 21/100. Just like painting a beautiful landscape, math can be a lovely and calming experience once you understand its gentle rhythms.
Yes, any integer over any other integer (except zero) is always a rational number.
the square root of 21
It is equal to 21/2 which is a rational number
21 is a rational number.
Any number that is presented as an integer "over" (aka divided by) an integer is automatically a rational number - that's what the definition of a rational number is.
irrational
It is rational because it can be expressed as a fraction which is 21/5
No. The square root of an integer is either an integer, or an irrational number.
Rational.
Yes. Any whole number is rational. An irrational number is one that goes on forever without repeating, like √2=1.414213...
0.21 is a rational number because it can be expressed as a fraction in the form of 21/100
21/71 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
21 is an integer which is also a rational number because it can be expressed as a fraction in the form of 21/1
You wont be able to add a rational number and an irrational number and get a number not in a fraction ( 3 + 22/7) (21/7 + 22/7 = 43/7) So, yes as you see in the example above it made another irrational number.