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3 years ago

Question 7 of 10

Mathematics

1 answer:

Ipatiy [6.2K]3 years ago

7 0

Answer:

A (point) is the answer to the question.

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-45 divided by -9 .........

dmitriy555 [2]

5 because it’s a double negative which offsets the answer to be positive 5

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3 years ago

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Tic-tac-toe: In the game of tic-tac-toe, if all moves are performed randomly the probability that the game will end in a draw is

Natasha2012 [34]

Answer:

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

And if we find the individual probability we got:

$P(X=0)=(7C0)(0.127)^0 (1-0.127)^{7-0}=0.3865$

And replacing we got:

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

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:

$X \sim Binom(n=7, p=0.127)$

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:

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

And we want to find this probability:

$P(X \geq 1)$

And we can use the complement rule and we got:

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

And if we find the individual probability we got:

$P(X=0)=(7C0)(0.127)^0 (1-0.127)^{7-0}=0.3865$

And replacing we got:

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

6 0

3 years ago

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Stephen factored x2−10x 21 and found the answer to be (x 7)(x 3). Is he correct? Question 4 options: yes no.

STALIN [3.7K]

The true statement is that Stephen's factored expression is incorrect.

Given

The expression is given as:

$\rm x^2-10x+21$

<h3>What is factorization?</h3>

Factorization involves splitting a function into factors.

Start by expanding the equation

$\rm x^2-10x+21=0\\\\x^2-7x-3x+21=0$

Factorize the equation

$\rm x^2-7x-3x+21=0\\\\x(x-7)-3(x-7)=0$

Factor out x - 7

$\rm x(x-7)-3(x-7)=0\\\\(x-7)(x-3)=0$

Hence, the true statement is that Stephen's factored expression is incorrect.

Read more about factored expressions at:

brainly.com/question/11579257

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2 years ago

How many solutions exist for the giving equation? 3(x+10)+6=3(x+12)

Evgen [1.6K]

There’s no x^2, so you don’t need to foil, so there should be 1

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3 years ago

How does the y-intercept play a role in graphing a line?

ella [17]

<span> the y-intercept is the point where the graph of the line crosses the y-axis. It helps u with the formula to find the slope and function of numbers depending on the problem</span>

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3 years ago