550 is 12.5% of what number
1 answer:
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Answer:
no real solutions
Step-by-step explanation:
If equation is...
= no real solutions
Answer:
If she wants at least one comedy, there are 1484 different combinations.
Step-by-step explanation:
The order in which she wants to pick the movies is not important. So, we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
In this question:
She wants combinations of 3 movies, with at least one comedy. The easiest way to find this is finding the total number of combinations of 3 movies, from the set of 25(18 children's and 7 comedies), and subtract by the total number without comedies(which is 3 from a set of 25). So
Total:
3 from a set of 25.
Without comedies:
3 from a set of 18.
At least one comedy:
If she wants at least one comedy, there are 1484 different combinations.