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4 years ago

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2. Algebra help please do a-c and show all steps

1 answer:

Fudgin [204]4 years ago

4 0

Do the math urself stop bugging ither people to do it for u thats why ur not supposed tonsleep durring class so u can learn how to do it so stop talking to ur freinds and listen

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the name Joe is very common at a school in one out of every ten students go by the name. If there are 15 students in one class,

kumpel [21]

Using the binomial distribution, it is found that there is a 0.7941 = 79.41% probability that at least one of them is named Joe.

For each student, there are only two possible outcomes, either they are named Joe, or they are not. The probability of a student being named Joe is independent of any other student, hence, the <em>binomial distribution</em> is used to solve this question.

<h3>Binomial probability distribution </h3>

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

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

The parameters are:

x is the number of successes.

n is the number of trials.

p is the probability of a success on a single trial.

In this problem:

One in ten students are named Joe, hence $p = \frac{1}{10} = 0.1$ .

There are 15 students in the class, hence $n = 15$ .

The probability that at least one of them is named Joe is:

$P(X \geq 1) = 1 - P(X = 0)$

In which:

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

$P(X = 0) = C_{15,0}.(0.1)^{0}.(0.9)^{15} = 0.2059$

Then:

$P(X \geq 1) = 1 - P(X = 0) = 1 - 0.2059 = 0.7941$

0.7941 = 79.41% probability that at least one of them is named Joe.

To learn more about the binomial distribution, you can take a look at brainly.com/question/24863377

8 0

3 years ago

A 4×4 square is divided into 16 cells as shown. Divide the square into two congruent (identical) parts by cutting only along the

VladimirAG [237]

Answer:cut it in half, / that way and — that way, cut it straight down, |,

Step-by-step explanation: math

4 0

3 years ago

Read 2 more answers

What is the answer of this equation

Yakvenalex [24]

Can you post the rest of the question?

5 0

3 years ago

F(x)=x^2-3x; Find f(-8)

Bumek [7]

F(x) = x^2 - 3x
f(-8) = (-8)^2 - 3(-8)
f(-8) = 16 - (-24)
f(-8) = 16 + 24
f(-8) = 40 (Answer)

Hope this helps

3 0

3 years ago

Jonah is purchasing a car that is on sale for 15% off. He knows the function that represents the sale price of his car is c(p) =

nika2105 [10]

The answer is b, f[c(p)]=0.9265p.

f[c(p)]=f(0.85p)=1.09(0.85p)=0.9265p

7 0

4 years ago