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3 years ago

Where did the symbol used for pi originate?

Mathematics

1 answer:

Andrej [43]3 years ago

3 0

it comes from the Greek alphabet

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The sum of a number b and 3 is greater than 8 and less then 12

snow_lady [41]

The sum of a number b and 3 is greater than 8 and less than 12 => b + 3 < 8
=> b + 3 > 12

 Now, let’s combine this into an expression:
=> 8 < b+3 < 12
=> (8 - 3) 5

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3 years ago

Let the probability of success on a Bernoulli trial be 0.26. a. In five Bernoulli trials, what is the probability that there wil

andreyandreev [35.5K]

Answer:

0.3898 = 38.98% probability that there will be 4 failures

Step-by-step explanation:

A sequence of Bernoulli trials forms the binomial probability distribution.

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.

Let the probability of success on a Bernoulli trial be 0.26.

This means that $p = 0.26$

a. In five Bernoulli trials, what is the probability that there will be 4 failures?

Five trials means that $n = 5$

4 failures, so 1 success, and we have to find P(X = 1).

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

$P(X = 1) = C_{5,1}.(0.26)^{1}.(0.74)^{4} = 0.3898$

0.3898 = 38.98% probability that there will be 4 failures

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3 years ago

You are working as an office apprentice for the bksb Newcastle Arena. You are helping collect a customer satisfaction survey for

Nana76 [90]

Answer:

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2 years ago

If need any help editing an essay or something you can not do on here heres my number

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Answer:

on what's app ?

Step-by-step explanation:

or telegram ?

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3 years ago

Which value of a would make the expression 5 1/3 divided by 4/a equivalent to a whole number?

Leya [2.2K]

9514 1404 393

Answer:

a = any positive multiple of 3

Step-by-step explanation:

You want ...

(5 1/3)/(4/a) = whole number

(16/3)·(a/4) = whole number

(4a/3) = whole number

This will be the case for a = 3n, for any positive integer n.

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2 years ago