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klio [65]
2 years ago
12

50+50 easy points and have a good rest of your day! :)

Mathematics
2 answers:
Scorpion4ik [409]2 years ago
7 0
100
Have a good day! :)
HACTEHA [7]2 years ago
7 0

Answer:

50 + 50 = 100

Step-by-step explanation: Also I hope you have an amazing day/night!!!

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PLEASE HELP ASAP
vovikov84 [41]

Answer:

Third option

Step-by-step explanation:

x^{2}-10x+25=0 is the correct answer. 100% sure

7 0
3 years ago
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Adrienne answered all 21 multiple choice questions correctly on her science test, if her teacher decides to let one of the quest
prisoha [69]
Since there are 21 questions and one is extra credit, the fraction is 21/20. Divide it to get 1.05. In percent, this is 105%. Hope this helps!
6 0
3 years ago
Solve the inequality <br> a^2(a-4)(a+3)&gt;0
Marysya12 [62]
Use math papa it’s a good thing it’s on the browser
6 0
3 years ago
The ratio of men to women working for a company is 4 to 3 . if there are 39 women working for the company, what is the total num
____ [38]
4:3
x:39

We need to find what 3 was multiplied by to get 39:
39/3 = 13.

Now multiply 4 by this number
4*13 = 52

Hope this helped!
7 0
3 years ago
Read 2 more answers
One strange phenomenon that sometimes occurs at U.S. airport security gates is that an otherwise law-abiding passenger is caught
valentinak56 [21]

Answer:

c. 0.16

Step-by-step explanation:

For each passenger there are only two possible outcomes. Either they are caught with a gun, or they are not. The probability of a passenger being caught with a gun is independent from other passengers. So we use the binomial probability distribution to solve this question.

However, we are working with samples that are considerably big. So i am going to aproximate this binomial distribution to the normal.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this problem, we have that:

n = 3000000, p = 0.00001

So

\mu = E(X) = np = 3000000*0.00001 = 30

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{3000000*0.00001*(1-0.00001)} = 5.48

What is the probability that tomorrow more than 35 domestic passengers will accidentally get caught with a gun at the airport?

This probability is 1 subtracted by the pvalue of Z when X = 35. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{35 - 30}{5.48}

Z = 0.91

Z = 0.91 has a pvalue of 0.8186

1 - 0.8186 = 0.1814.

The closest answer is:

c. 0.16

8 0
3 years ago
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