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liberstina [14]
3 years ago
8

HELP PLEASEEEE I don’t get it

Mathematics
2 answers:
jek_recluse [69]3 years ago
7 0

10 is answer choice B

11 is answer choice A

vredina [299]3 years ago
6 0

The answer is A!!

Hope this helps!!

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There are 7 acts in a talent show.
lara31 [8.8K]

Answer:

<u><em></em></u>

  • <u><em>Event A: 1/35</em></u>
  • <u><em>Event B: 1/840</em></u>

<u><em></em></u>

Explanation:

<u>Event A</u>

For the event A, the order of the first 4 acts does not matter.

The number of different four acts taken from a set of seven acts, when the order does not matter, is calculated using the concept of combinations.

Thus, the number of ways that the first <em>four acts</em> can be scheduled is:

          C(m,n)=\dfrac{m!}{n!(m-n)!}

         C(7,4)=\dfrac{7!}{4!(7-4)!}=\dfrac{7!}{4!(3)!}=35

And<em> the number of ways that four acts is the singer, the juggler, the guitarist, and the violinist, in any order</em>, is 1: C(4,4).

Therefore the<em> probability of Event A</em> is:

           P(A)=1/35

Event B

Now the order matters. The difference between combinations and permutations is ordering. When the order matters you need to use permutations.

The number of ways in which <em>four acts </em>can be scheculed when the order matters is:

           P(m,n)=\dfrac{m!}{(m-n)!}

         P(m,n)=\dfrac{7!}{(7-4)!}=P(m,n)=\dfrac{7!}{4!}=840

The number of ways <em>the comedian is first, the guitarist is second, the dancer is third, and the juggler is fourth</em> is 1: P(4,4)

Therefore, <em>the probability of Event B</em> is:

            P(B)=1/840

7 0
3 years ago
What ratio is an equal ratio of 1:4?
Mariulka [41]

Answer:

2:8

Step-by-step explanation:

The ratio is already in lowest terms so we found an equivalent ratio by multiplying both terms by 2.

6 0
3 years ago
HELP ASAP!! WILL MARK BRAINIST!!! ASAP!!<br> n - 2 divided by -3 = -6 what is the value of n?
xenn [34]

Answer:

= -6 2/3

Step-by-step explanation:

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2 years ago
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Customers can pick their own pumpkins at The Great Pumpkin Patch. They pay $4 to enter the patch and $3 per pound for the pumpki
Misha Larkins [42]
We are given with the costs: 4$ entrance fee and 3$ per pound of pumpkin picked. The total amount of costs is represented by the function: y = 4 + 3x where y is the total cost of a person entering the patch and x is the number of pounds of pupmkin bought.
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Part of the population of 7,250 elk at a wildlife preserve is infected with a parasite. A random sample of 50 elk shows that 12
posledela

Answer:

1740

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