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2 years ago

If the numbers 25, 30 ,40, 48 are in proportion, Middle terms are.....

Mathematics

1 answer:

zubka84 [21]2 years ago

3 0

Step-by-step explanation:

it is 5/6 ..............

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A candy dish contains 30 jelly beans and 20 gumdrops. Ten candies are picked at random. What is the probability that 5 of the 10

AveGali [126]

Answer:

The probability of drawing 5 gumdrops in 10 picks from the dish is 0.215

Step-by-step explanation:

A hypergeometric distribution is a discrete probability distribution that describes the probability of successes in draws with each draw being a success or failure, without replacement from a finite population size that contains exactly the same objects. The general formula is given as:

$h(x) =\frac{({A}C_{x})({N-A}C_{n-x})}{^{N}C_{n} }$

where:

$^{n}C_{r}=\frac{n!}{(n-r)!r!}$

h(x) is the probability of x successes,

n is the number of attempts,

A is the number of successes

N is the number of elements

For this problem:

A = 30, x = 5, N = 50, n = 10

The probability of drawing 5 gumdrops in 10 picks from the dish P(x=5) is

$P(x=5)=\frac{({30}C_{5})({50-30}C_{10-5})}{^{50}C_{10} }\\P(x=5)=\frac{({30}C_{5})({20}C_{5})}{^{50}C_{10} }$

$P(x=5)=\frac{\frac{30!}{(30-5)!5!}*\frac{20!}{(20-5)!5!} }{\frac{50!}{(50-10)!10!} }\\P(x=5)=\frac{\frac{30!}{25!5!}*\frac{20!}{15!5!} }{\frac{50!}{40!10!} }$

$P(x=5)=\frac{142506*15504}{1.207*10^{10} }=0.215$

P(x=5) = 0.215

The probability of drawing 5 gumdrops in 10 picks from the dish is 0.215

4 0

3 years ago

Find the measure of A.18 B.54 C.36

prisoha [69]

Answer:

[A] 18

Explanation:

[I'm assuming you want us to find the measure of ∠ABC]

∠ABC is a right angle, meaning ∠ABD and ∠DBC added together must equal 90°

2x° + 3x° = 90

2x + 3x = 5x

5x = 90

5x / 5 = 90 / 5

x = 18

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3 years ago

Find the 13th term in the following arithmetic sequence 2,5,8,11

givi [52]

Answer:

answer is 38, since she keeps deleting my things

Step-by-step explanation:

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3 years ago

Money Flow The proceeds from the sale of a building will yield a uniform continuous flow of $10,000 a year for 10 years. Find th

alexdok [17]

Answer:

10500

Step-by-step explanation:

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3 years ago

Find the solution to the system of linear equations.

natali 33 [55]

Answer:

x = -1 y = 2

Step-by-step explanation:

Notice that the coefficients of x are opposites of each other. That makes the problem so much easier to solve. All you have to do is add the two equations and the x terms will be eliminated.

2x - 4y = -10

-2x - y = 0

- 5y = -10

y = 2 Substitute y = 2 into the first equation. 2x - 4(2) = -10

2x - 8 = -10

2x = -2

x = -1

It is always a good idea to check your results into the equations to see if they satisfy the equations.

6 0

2 years ago