No, and nor is negative 5 pi.
It is a rational number because it can be expressed as an improper fraction in the form of -80/1
Five examples of irrational numbers are Pi, the Golden Ratio, Euler's number, the square root of 7.298363, and the cubed root of 26.483738.
There are an infinite number of irrational numbers. Here are some: e (the base for natural logarithms), pi, sqrt(2), sqrt(3), sqrt(5), square root of any number that is not a perfect square: perfect squares are 12 22 32 42 52 etc. which equals 1 4 9 16 25 ..... natural logarithm of any rational number (greater than zero) will be irrational. but not 1, since ln(1) = 0, which is not irrational. Note the logarithm of a negative number is a complex number, and the logarithm of zero is negative infinity.
"Irrational" numbers are the name for numbers that cannot be expressed in fractions; that is, in a "ratio" of one number to another. The number .5 is 1/2; one divided by two. The most useful "irrational" number is the number "pi", the ratio of the diameter of a circle divided by its circumference. There is no fraction that exactly equals "pi", although 22/7 is close. Another irrational number is the number "e", the root of the "natural logarithms". This is extensively used in engineering and electronic calculations.
It can. pi / sqrt(5) = an irrational number. However, it doesn't have to be: pi / pi = 1.
No.No.No.No.
I don't think there is such thing as 5 pied. Unless you mean "5 times pi", then the answer is yes. 'PI' and any multiple of it are irrational numbers.
No, and nor is negative 5 pi.
No. An irrational number has a whole number, followed by a decimal, which has no repeating pattern to it. For example, Pi: 3.14159265358979...... it goes on forever, with no pattern. unlike 5 and one-third: 5.33333333333333.... it goes on forever, but there is a pattern to it. or 4.12121212121212
the answer is rational.
Pi, the numerical value of the ratio of the circumference of a circle to its diameter.
-1.5, -pi, -2/5
It is a rational number because it can be expressed as an improper fraction in the form of -80/1
3.1415 is rational (as are all other terminating decimals). Note that these are some of the first few digits of pi (3.14159…, which really should be rounded to 3.1416 not 5); pi is an irrational number. Approximations of pi are generally rational numbers.
A rational, non-zero number multiplied by an irrational number always results in an irrational number. Knowing this, you can fairly easily choose a rational number to multiply by any given irrational that will be within your stated range. In this example, I'm going to choose pi (~3.1415926535897932) as the irrational number and x will be the rational number. So we want to satisfying the following inequality: 0.6 < pi * x < 0.66 Dividing everything by pi (which is positive) gives us: 0.6/pi < x < 0.66/pi A quick check on the calculator tells us that: 0.6/pi ~= 0.191 0.66/pi ~= 0.21 So, choosing x = 0.20, we end up with 0.2 * pi as our answer. A quick verification with the calculator shows that 0.2 * pi ~= 0.628, so it's between 0.6 and 0.66. Since 0.2 is 1/5, the equivalent pi/5 is a slightly more aesthetic answer.
-5/6 is a rational number expressed as a fraction