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Q: Why is 10 pi irrational?

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Sure; for example, 10 + pi is irrational, 10 - pi is irrational. Both are positive. If you add them, you get 20.

Yes. For example: a = 10 - pi b = pi Both are irrational; the sum a + b is 10.

No because the value of pi as regards to a circle is an irrational number

It is irrational, just like pi

If a numerator and/or denominator in a fraction is irrational, the entire fraction is irrational. Since pi is irrational, pi divided by two is also irrational.

Pi, is an irrational number (it cannot be written as a fraction) For this reason, 3 times pi is also irrational.

It can. pi / sqrt(5) = an irrational number. However, it doesn't have to be: pi / pi = 1.

The square of pi is an irrational number.

It is irrational

No, since Pi is an irrational number, 2(pi) would still be irrational.

Johann Lambert proved that pi is irrational in 1761.

Pi is irrational. Irrational numbers, by definition, have no factors.

Pi is an irrational number

The product of two rational numbers, as in this example, is always RATIONAL.However, if you mean 10 x pi, pi is irrational; the product of a rational and an irrational number is ALWAYS IRRATIONAL, except for the special case in which the rational number is zero.

There is no pattern in pi. it is irrational

Pi is irrational.

Yes. 2*pi is irrational, pi is irrational, but their quotient is 2pi/pi = 2: not only rational, but integer.

pi is an irrational number. It is irrational because it cannot be expressed as a ratio of two integers.

pi is an example of an irrational number.

Yes, it is an irrational number.

It is an irrational number

It is an irrational number

There is no "last digit" of pi. Pi is irrational. Irrational numbers go in forever; like infinity

Since pi is irrational, any multiple of it is too.

-Pi is irrational, because it does not terminate or repeat. Whenever you multiply an irrational number by a rational number (-1), the result is an irrational number.