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3 years ago

List three different combinations of coins each with a value of 30% of a dollar

Mathematics

2 answers:

xz_007 [3.2K]3 years ago

7 0

Answer:

3 dimes 1 quarter and 1 nickel

Step-by-step explanation:

they all equal to 30%

SVETLANKA909090 [29]3 years ago

5 0

Answer:

1. one quarter and one nickel

2. two dimes and two nickels

3. one dime, two nickels, and ten pennies

Step-by-step explanation:

(Assuming you mean U.S.A. money)

30% of a dollar equals 30 cents. Each of the above equals 30 cents.

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find the probability exactly 3 successes in 6 trials of a binomial experiment in which the probability of success if 50%. round

Dennis_Churaev [7]

Answer:

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Step-by-step explanation:

The probability of getting exactly k successes in n trials is given by the probability mass function:

$P(k;n,p)=P(X=k)={\binom {n}{k}}p^{k}(1-p)^{n-k}$

Where p denotes the probability of success.

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also form the question we have:

k=3 and n=6.

Hence the probability of exactly 3 successes in 6 trials is:

$P(3;6,\dfrac{1}{2})=P(X=3)={\binom {6}{3}}(\dfrac{1}{2})^{3}(1-\dfrac{1}{2})^{6-3}$

$P(3;6,\dfrac{1}{2})=P(X=3)={\binom {6}{3}}(\dfrac{1}{2})^{3}(\dfrac{1}{2})^{3}$

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$\dfrac{5}{16}\times 100=31.25\%=31.2\%$

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3 years ago

List three different combinations of coins each with a value of 30% of a dollar​

List three different combinations of coins each with a value of 30% of a dollar