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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?
Oh, dude, the ratio of two integers is just one number divided by the other. As long as the denominator isn't zero (because you can't divide by zero, like, ever), you're good to go. So, like, if you have 8 divided by 2, the ratio is 4. Easy peasy!
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
