3 years ago

Please CHECK IF THIS IS CORRECT! Please!

Mathematics

1 answer:

Zielflug [23.3K]3 years ago

4 0

Yes it is correct!!!

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Miriam is picking out some movies to rent, and she is primarily interested in comedies and foreign films. She has narrowed down

Keith_Richards [23]

Answer:

There are 795 combinations.

Step-by-step explanation:

The number of ways or combinations in which we can select k element from a group of n elements is given by:

$nCk=\frac{n!}{k!(n-k)!}$

So, if Miriam want to choose 3 movies with at least two comedies, she have two options: Choose 2 comedies and 1 foreign film or choose 3 comedies.

Then, the number of combinations for every case are:

1. Choose 2 Comedies from the 10 and choose 1 foreign film from 15. This is calculated as:

$10C2*15C1=\frac{10!}{2!(10-8)!}*\frac{15}{1!(15-14)!}$

$10C2*15C1=675$

2. Choose 3 Comedies from the 10. This is calculated as:

$10C3=\frac{10!}{3!(10-3)!}=120$

Therefore, there are 795 combinations and it is calculated as:

675 + 120 = 795

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3 years ago

A point is represented by a single dot and

evablogger [386]

A letter, which is how you name it. If that is what your asking, of course.

5 0

3 years ago

Find the number of permutations in the word CIRCUS.

DerKrebs [107]

If the letters are considered distinct, then the number of permutations is $6!=720$ .

If we count either C as the same character, then we would be double-counting - to correct this, we would simply divided by the number of ways we can choose C from the available characters, or $\dfrac{6!}{2!}=360$ .

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3 years ago

A side of 6 feet, and a 120° angle<br> A. One<br> B. None. C. Many

pshichka [43]

Answer:

C. Many ang sagot............

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2 years ago

3 - x3 > -4 help pls

Kamila [148]

Answer:

x<1.912931

Step-by-step explanation:

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3 years ago