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rodikova [14]
3 years ago
5

Rat.e me. . . please don't make fun, i got punched and my face got def.ormed

Mathematics
1 answer:
Alina [70]3 years ago
7 0

Answer: Out of 10... 10/10

Step-by-step explanation: I don’t rate people’s outer appearances but rather their personalitie.

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At a local University, it is reported that 81% of students own a wireless device. If 5 students are selected at random, what is
Sphinxa [80]

Answer:

34.87% probability that all 5 have a wireless device

Step-by-step explanation:

For each student, there are only two possible outcomes. Either they own a wireless device, or they do not. The probability of a student owning a wireless device is independent from other students. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

81% of students own a wireless device.

This means that p = 0.81

If 5 students are selected at random, what is the probability that all 5 have a wireless device?

This is P(X = 5) when n = 5. So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 5) = C_{5,5}.(0.81)^{5}.(0.19)^{0} = 0.3487

34.87% probability that all 5 have a wireless device

5 0
3 years ago
What is <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> 2/3(3x+9)=−2(2x+6)
lubasha [3.4K]
Your answer is x= -3
5 0
3 years ago
ASAP HELP PLEASE! I WILL MARK THE FASTEST CORRECT ANSWER BRAINLIEST<br> see attached
V125BC [204]

Answer:1.1 ft^2

Step-by-step explanation:

Φ=55°

Radius=r=4

π=3.14

Area of segment=area of sector - area of triangle

Area of sector=Φ/360 x π x r x r

area of sector=55/360 x 3.14 x 4 x 4

Area of sector=(55x3.14x4x4) ➗ 360

Area of sector=2763.2 ➗ 360

Area of sector=7.7 ft^2

Area of triangle=0.5 x r x r x sinΦ

Area of triangle=0.5 x 4 x 4 x sin55

Area of triangle=0.5 x 4 x 4 x 0.8192

Area of triangle=6.6 ft^2

Area of segment=area of sector - area of triangle

Area of segment=7.7-6.6

Area of segment=1.1 ft^2

4 0
4 years ago
What is the number six million, thirty thousand, expressed in scientific notation? 6.03 × 10^6
TEA [102]
The answer is B. 6.3 * 10^6
6.3 * 10^6 = 6,300,000
Hope this helps!
8 0
3 years ago
Read 2 more answers
Question attached below
tamaranim1 [39]

Answer:

B . f(x+h)=\frac{x+h}{1+x+h}

Step-by-step explanation:

Given function is:

f(x)=\frac{x}{1+x}

Sall h is used to denote minor change in function. The value of the new function f(x+h) will be calculated by putting x+h in place of x in the function.

So putting x+h in place of x

f(x+h)= \frac{x+h}{1+(x+h)}\\=\frac{x+h}{1+x+h}

So, option B is the correct answer ..

6 0
4 years ago
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