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2 years ago

25 points! First RIGHT answer gets brainliest!

Mathematics

2 answers:

nekit [7.7K]2 years ago

7 0

Answer:

I hope this help :)

Step-by-step explanation:

radius: 2.459

diameter: 38

circumference: 119.381

but if you're looking for a more appropriate answer I would round radius and circumference.

fgiga [73]2 years ago

3 0

Answer:

steps below

Step-by-step explanation:

radius: 19/2 = 9.5 ft

diameter: 19 ft

circumference: 2 x 3.14 x 9.5 = 59.66 ft²

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Consider the following binomial experiment. A company owns 4 machines. The probability that on a given day any one machine will

const2013 [10]

Answer:

There is a 73.11% probability that at least 2 machines will break down on a given day.

Step-by-step explanation:

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 combinatios 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.

In this problem we have that:

There are 4 machines, so $n = 4$ .

The probability that on a given day any one machine will break down is 0.53. This means that $p = 0.53$ .

What is the probability that at least 2 machines will break down on a given day?

$P(X \geq 2) = P(X = 2) + P(X = 3) + P(X = 4)$

In which

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

$P(X = 2) = C_{4,2}.(0.53)^{2}.(0.47)^{2} = 0.3723$

$P(X = 3) = C_{4,3}.(0.53)^{3}.(0.47)^{1} = 0.2799$

$P(X = 4) = C_{4,4}.(0.53)^{4}.(0.47)^{0} = 0.0789$

$P(X \geq 2) = P(X = 2) + P(X = 3) + P(X = 4) = 0.3723 + 0.2799 + 0.0789 = 0.7311$

There is a 73.11% probability that at least 2 machines will break down on a given day.

7 0

3 years ago

Can anyone help me please at least to answer one of this please

natima [27]

Answer:

7 answer is 4+2√129 I think

7 0

3 years ago

Mrs. Ackerman bought a beach ball for her classroom. The diameter of the beach ball measured 23 inches. Which of the following i

Helen [10]

6370 in3

Step-by-step explanation:

3 0

2 years ago

Solve the literal equation, C = 12h + 4. Justify each step

IceJOKER [234]

Answer:

slope=.083

c=4

h=-0.333..

Step-by-step explanation:

8 0

3 years ago

What is the answer to 6(x+4)=30

DanielleElmas [232]

Start by distributing the 6 through the parenthses on the left side.

So we have 6x + 24 = 30.

Solving from here, I would subtract 24 from both sides to get 6x = 6.

Finally, dividing both sides of the equation by 6, we have x = 1.

6 0

3 years ago

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