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3 years ago

I need help with my math homework that is due in 2 days!! HELP!

Mathematics

1 answer:

fiasKO [112]3 years ago

3 0

Answer:

The trace 704" long.

Step-by-step explanation:

The trace will be 14 times the circumference of the wheel. With a radius of 8", the circumference L is

$L = 2\pi r = 2\pi \cdot 8 = 50.27"$

and so 14 times that is approximately 704".

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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:

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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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Step-by-step explanation:

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