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Oksana_A [137]
3 years ago
7

Find the distance between points A and C.

Mathematics
2 answers:
Svetlanka [38]3 years ago
8 0

Answer:

i think it is B


Step-by-step explanation:


ASHA 777 [7]3 years ago
5 0

Answer:

B)

Step-by-step explanation:

Count up every line to B, (6)

Count over to every line to C, (6)

Add the total number of movements,

12


Hope this helps! Have a great day :)

-wfz

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For a binomial process, the probability of success is 40 percent and the number of trials is 5. Find the standard deviation.
Yakvenalex [24]

Answer:

Sd(X) =\sqrt{1.2}=1.095

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

Let X the random variable of interest, on this case we now that:

X \sim Binom(n=5, p=0.4)

The probability mass function for the Binomial distribution is given as:

P(X)=(nCx)(p)^x (1-p)^{n-x}

Where (nCx) means combinatory and it's given by this formula:

nCx=\frac{n!}{(n-x)! x!}

The mean for the binomial distribution is given by:

E(X) =np=5*0.4=2

And the variance is given by:

Var(X) = np(1-p) =5*0.4*(1-0.4)=1.2

And the deviation is just the square root of the variance so we got:

Sd(X) =\sqrt{1.2}=1.095

7 0
3 years ago
the area of a square sandbox is 83 square feet. to the nearest foot, what is the perimeter of sandbox?
vagabundo [1.1K]
Area=bh
b=base
h=height

Since a square has 4 equal sides, we can √83 to give us each side. This being 9.11 feet

perimeter=9.11+9.11+9.11+9.11=36.44

Answer: 36 to the nearest foot
7 0
3 years ago
Is y=9x proportinal?
igor_vitrenko [27]

Answer:

yeah it is

y is directly proportional to x

proportionality constant is 9

7 0
3 years ago
If a cot α = 1 and b cos α = 1, find a2 – b 2​
S_A_V [24]

The equivalent expression of the<u> different of two square</u> is -1

Given the following expressions

a cot α = 1

a = 1/cot α = sinα/cosα

b = 1/cos α

We are to find the expression a² - b²

According to <u>difference of two squares;</u>

a² - b² =  (a + b) (a - b)

Substitute the given expressions into the formula as shown:

a^2 - b^2 = (\frac{sin \alpha}{cos \alpha} )^2 - (\frac{1}{cos \alpha} )^2\\a^2 - b^2=\frac{sin^2 \alpha}{cos^2 \alpha} -\frac{1}{cos ^2 \alpha}\\a^2 - b^2=\frac{sin^2 \alpha-1}{cos^2\alpha}\\a^2 - b^2=\frac{-(1-sin^2\alpha)}{cos^2\alpha} \\a^2 - b^2=\frac{-os^2 \alpha}{cos^2 \alpha}\\a^2 - b^2 = -1

This shows that the equivalent expression of the<u> difference of two squares</u> is -1

Learn more here: brainly.com/question/11084694

4 0
2 years ago
5,467.219 rounded to the nearest whole??
Soloha48 [4]

Answer:5,467

Step-by-step explanation:

since the decimal in under .2, it rounds down so rounding the number down to the nearest whole number would be 5467

3 0
3 years ago
Read 2 more answers
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