For this case, from the diagram we can conclude the following results according to the surveys:
For Dogs:
Dogs = 24 + 31 = 55
No dogs = 10
Total = 65
For the cats:
Cats = 10 + 31 = 41
No cats = 24
Total = 65
I'm going to assume you meant to say
Factorize the denominator to reveal a removable discontinuity in the limand:
In the limit, we're considering values of x *near* -4, and not x = -4 itself. So we can cancel the factors of x + 4 and we're left with
See how many times the denominator goes into the numerator. For example, with 24/8, 8 goes into 24 three times, so 24/8 is 3. If I had 25/8, then it would be 3 1/8 because you have one left over after you divide the 8 into 25.
12 red marbles
20 green marbles
17 blue marbles
Total amount: 39 marbles
39 (total) - 12 (red) = 27.
John has a probability of 27/39 that he will not pick a red marble out of the bag.
If you want to simplify your fraction by dividing both numbers by 3 to make it even more accurate, an even better answer would be 9/13.
(so all you do is divide 27/3 and divide 39/3 aswell which gives you 9 and 13.)