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Alika [10]
3 years ago
7

A circle has an area of 144л cm2. Find the circumference.

Mathematics
1 answer:
Elza [17]3 years ago
8 0
24cm.........................................
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A group of 15 people are going to run a race. The top 8 will advance to the finals. Determine if the situation is a permutation
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For the given situation we have a total of 259,459,200 permutations.

<h3>How many permutations are?</h3>

First, how we know that it is a permutation?

Because the order matters, we aren't only selecting 8 out of the 15 people, but these 8 selected also have an order (is not the same thing to finish the race first than fourth, for example).

Then we need to find the number of permutations, to do it, we need to find the numbers of options for each of the 8 positions.

  • For the first position there are 15 options.
  • For the second position ther are 14 options (one runner already finished).
  • For the third position there are 13 options.
  • And so on.

Then the total number of permutations (product between the numbers of options) is:

P = 15*14*13*12*11*10*9*8 = 259,459,200

If you want to learn more about permutations:

brainly.com/question/11732255

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Daniel buys a basket of eggplants on sale for $25 before tax. The sales tax is 4%. What is the total price Daniel pays for the b
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Do 25 X .04 = 1
25+1=26
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. 50 minutes will take to fill a litre

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I need help ASAP with this
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