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3 years ago

Help PLEASE ive been stuck on this forever!

Mathematics

1 answer:

AlekseyPX3 years ago

4 0

Answer:

1/5

Step-by-step explanation:

2/10=1/5

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What is the solution to the expression -2 - 3 - (-4)

andrew11 [14]

Answer:

The answer is -1

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4 years ago

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Find the discriminant and the number of real roots for this equation. x2 + 2x + 8 = 0

m_a_m_a [10]

Your discriminant is a negative number. Therefore, your solutions are imaginary. It's d from above.

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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:

Hence, the probability of exactly 3 successes in 6 trials of a binomial experiment round to the nearest tenth of a percent is:

31.2%

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.

We are given that the probability of success if 50%.

i.e. $p=\dfrac{1}{2}$

also form the question we have:

k=3 and n=6.

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

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

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

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

$\binom {6}{3}=20$

Hence,

$P(3;6,\dfrac{1}{2})=P(X=3)=20\times (\dfrac{1}{2})^6=\dfrac{5}{16$

In percentage the probability will be:

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

8 0

4 years ago

Help ASAP plzzzzzzzz

pochemuha

The answer is a. 64^2

First find the base area: 4*4=16

(* means times or to multiply)

6*4=24

24/2= 12

12*4=48

48+16=64.

Hope this helps and hope you have a great day and brainiest is always appreciated

3 0

4 years ago

Which graph shows the solution to the system of linear inequalities below?

Tasya [4]

Since there isn't a picture of the graphs, I attached one, of my graph, to this answer.

I'm also assuming (y2 2x+1) is actually (y< 2x+1).

Possible solutions are within the purple section of the attached image.

I hope this is helpful to you.

5 0

3 years ago