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nasty-shy [4]
3 years ago
13

In a chess tournament, each player is in one game with every other player. How many games will be played if there are 7 players

Mathematics
1 answer:
Elza [17]3 years ago
6 0
You would first find out how many games one player plays. It is 4 games. then you would multiply that by 7 because there are 7 players. your answer is 28
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D + t = total earnings
$3h + t = total earnings
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6 0
3 years ago
In a particular game, a fair die is tossed. If the number of spots showing is either four or five, you win $1. If the number of
TiliK225 [7]

Answer:

The probability that you win at least $1 both times is 0.25 = 25%.

Step-by-step explanation:

For each game, there are only two possible outcomes. Either you win at least $1, or you do not. Games are independent. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

Probability of winning at least $1 on a single game:

The die has 6 sides.

If it lands on 4, 5 or 6(either of the three sides), you win at least $1. So

p = \frac{1}{2} = 0.5

You are going to play the game twice.

This means that n = 2

The probability that you win at least $1 both times is

This is P(X = 2).

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 2) = C_{2,2}.(0.5)^{2}.(0.5)^{2} = 0.25

The probability that you win at least $1 both times is 0.25 = 25%.

4 0
3 years ago
If a container is being filled at 5 pints per minute, how many gallons per second is this?
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.010416666666. Use conversion factors to solve. 

6 0
3 years ago
Which expression is the factored equivalent of x2 - 5x + 4?
ozzi

Answer:

Step-by-step explanation:

A

5 0
3 years ago
Their 15,000 kids in the multipurpose room.there is only 16 rows with 5 seats in each.how many kids will not have a seat to sit
sp2606 [1]

Answer: 14,920 kids

Step-by-step explanation:

15,000-(16×5)=x

15,000-80=x

14,920=x

8 0
3 years ago
Read 2 more answers
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