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Alexus [3.1K]
3 years ago
10

Twelve people are given two identical speakers, which they are asked to listen to for differences, if any. Suppose that these pe

ople answer simply by guessing. Find the probability that three peo
Mathematics
1 answer:
ruslelena [56]3 years ago
7 0

Answer:

0.0537

Step-by-step explanation:

This follows a binomial distribution with : n

Number of trials 'N' = 12 ; Probability of success (difference between speakers) 'p' = 1/2 or 0.5 ; Probability of failure (no difference b/w speakers) = 1/2 or 0.5 ; No of success 'r' = 3

P (X = 3) = N C r. (p)^r.(q)^(n-r)\\

= 12C3 (0.5)^3 (0.5)^9

0.0537

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Kharon needs to write 3 book reports with b pages and 3 science reports with s pages during the school year. Write an algebraic
aalyn [17]

Answer:

3b+3s

Step-by-step explanation:

According to the statement, Kharon needs to write 3 book reports with b pages. This means that he has 3 books and each of them has b amount of pages which you can express as b+b+b that is equal to 3b. Also, he has 3 science reports with s pages which is 3s. In order to find the total number of pages, you have to add up 3b plus 3s. According to this, the algebraic expression for the total number of pages Kharon will need to write is: 3b+3s.

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2 years ago
How did Spain and Portugal maintain control of their Latin American domains?
ioda
<span>through a rigid class structure: viceroys/colonial officers, Creoles, mestizos</span>
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3 years ago
A line in the xy-plane that passes through the coordinate points (3, -6) and (–7, –4) will never intersecta line that is represe
anyanavicka [17]

Answer:

option A

Step-by-step explanation:

given coordinate (3, -6) and (–7, –4)

to find the equation of line

slope of the line passing through both the point will be

               m = \dfrac{y_2-y_1}{x_2-x_1}

               m = \dfrac{-4+6}{-7-3}

               m = -\dfrac{2}{10}

equation of line

( y - y₁ ) = m ( x - x₁ )

y + 6= -\dfrac{2}{10}(x - 3)

x + 5 y = -27

line which will not intersect will be parallel to it so option A has same slope as our line equation i.e. -1/5

hence, correct answer is option A

3 0
3 years ago
Kevin reads 5 pages in 15 minutes at this rate how many pages will he read in 45 minutes​
Aleksandr-060686 [28]

Answer:

15 pages

Step-by-step explanation:

45/15=3

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4 0
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creativ13 [48]

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