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2 years ago

PLEASE THIS IS URGENT

Mathematics

2 answers:

andrezito [222]2 years ago

8 0

Answer:

the corect answer is C

Step-by-step explanation:

kozerog [31]2 years ago

4 0

Answer:

Step-by-step explanation:

I am sorry if this is wrong

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Lena is going to the airport. It is 10: 41 am right now. Lena's flight will depart in 3 hours 43 minutes. What is the departure

NikAS [45]

the departure time is 2:24 pm

8 0

2 years ago

According to a study conducted by the Toronto-based social media analytics firm Sysomos, of all tweets get no reaction. That is,

Svetllana [295]

Answer:

a) E(X) = 71

b) V(X) = 20.59

Sigma = 4.538

Step-by-step explanation:

The question is incomplete:

According to a 2010 study conducted by the Toronto-based social media analytics firm Sysomos, 71% of all tweets get no reaction. That is, these are tweets that are not replied to or retweeted (Sysomos website, January 5, 2015).

Suppose we randomly select 100 tweets.

a) What is the expected number of these tweets with no reaction?

b) What are the variance and standard deviation for the number of these tweets with no reaction?

This can be modeled with the binomial distribution, with sample size n=100 and p=0.71, as the probability of no reaction for each individual tweet.

The expected number of these tweets with no reaction can be calcualted as the mean of the binomial random variable with these parameters:

$E(X)=n\cdot p=100\cdot 0.71=71$

The variance for the number of these tweets with no reaction can be calculated as the variance of the binomial distribution:

$V(X)=np(1-p)=100\cdot0.71\cdot0.29=20.59$

Then, the standard deviation becomes:

$\sigma=\sqrt{V(X}=\sqrt{20.59}=4.538$

5 0

2 years ago

What is the range of the data below A.2 B.5 C.12 D.13

Degger [83]

Range of the data = 13

Solution:

To find the range of the given data:

Let us first define what is range.

Range:

The range of the data set is the difference between the highest value and lowest value of the data set.

i. e. Range = Highest value – Lowest value

In the given number line,

Highest value indicated = 115

Lowest value indicated = 102

Range of the data = 115 – 102

= 13

Range of the data = 13

Hence the range of the given data is 13.

4 0

2 years ago

What is the lengthof a hypotenuse of the right triangle ABC in the figure

Harrizon [31]

There is no figure.
but you can use A^2 + B^2 = C^2
C is your hypotenuse.
so if you have the other two lengths if you square them and add them you'll have C squared. So you'll have to find the square root of that number to actually find the length.

5 0

3 years ago

CAN SOMEONE ANSWER THIS QUESTION PLZZZZZZ I REALLY NEED HELP WITH IT!!!!!!!!

Ugo [173]

The three main types of reasoning are as follows:

1. Deductive (contains formal and informal deductive reasoning)
2. Inductive (formal and informal)
3. Abductive (formal)

Hope this helps!

8 0

3 years ago

PLEASE THIS IS URGENT​

PLEASE THIS IS URGENT