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Is the number 81 irrational?
No - because it can be represented as a ratio of integers : 81 = 81/1 Any number that can be represented as a ratio of 2 integers is classified as a rational number (other than that you can't use 0 for the denominator)
What is the ratio of 2 integers where the denominator doesn't equal 0?
The ratio of two integers is a fraction that represents the division of one integer by another. As long as the denominator is not equal to zero, the ratio is defined. For example, the ratio of 4 to 2 is 4/2, which simplifies to 2.
IS 7.51 a irrational number?
No - because it can be represented as a ratio : 7.51 = 751/100 Any number that can be represented as a ratio of 2 integers is classified as a rational number (other than that you can't use 0 for the denominator)
The sum of four consecutive integers is -2 What are the four numbers?
-2, -1, 0, 1
What is the 2 divided by infinity?
It is 0. Think of dividing 2 by a very big number. For example, 2/20000000000= 1/10000000000 which is very close to 0. As the denominator gets bigger and bigger, the quotient approaches 0. In the limit it is 0. Remember infinity is not really a number. In this case it means, letting the denominator get as big as it can. Another way to think of or write this this is lim n-->0 of 2/n=0
