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3 years ago

14

How do we write ordered pairs?

1 answer:

kvv77 [185]3 years ago

7 0

Answer:

find the x and y values

Step-by-step explanation:

Ordered pairs are often used to represent two variables. we write (x, y) The number which corresponds to the value of x is called the x-coordinate and the number which corresponds to the value of y is called the y-coordinate.

Hope this helps

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In Leakwater township, there are two plumbers. On a particular day three Leakwater residents call village plumbers independently

Marianna [84]

Answer:

25% probability that all three residents will choose the same plumbe

Step-by-step explanation:

For each resident, there are only two possible outcomes. Either they choose the first plumbe, or they choose the second. The plumbers are chosen independent of each other. 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.

Each resident randomly chooses one of the two plumbers.

This means that $p = \frac{1}{2} = 0.5$

Three residents:

This means that $n = 3$

What is the probability that all three residents will choose the same plumb

This is P(X = 0)(all choose the second pumble) or P(X = 3)(all choose the first pumble). So

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

$P(X = 0) = C_{3,0}.(0.5)^{0}.(0.5)^{3} = 0.125$

$P(X = 3) = C_{3,3}.(0.5)^{3}.(0.5)^{0} = 0.125$

$p = P(X = 0) + P(X = 3) = 2*0.125 = 0.25$

25% probability that all three residents will choose the same plumbe

4 0

3 years ago

I am confusion. help me

timofeeve [1]

Multiple the two Collins

6 0

3 years ago

What is the value of the rational expression<br> 2x- 1<br> x+5<br> when x = 0?

nikitadnepr [17]

Answer:

5

Step-by-step explanation

becasue 2x0=0 and 1x0=0

and when you add 5 to 0 you get five

7 0

2 years ago

Which expression is equivalent to 15x+50

NNADVOKAT [17]

You would use distributive property 5x(2×+x)+50

5 0

3 years ago

What are the zeros of the polynomial function f(x) = x3 + 2x2 − 24x?

Alik [6]

You may notice that all of the terms have a common factor: $x$ . So, let's take the $x$ out of all the terms. This gives us:

$x(x^2 + 2x - 24) = 0$

Using the Zero Product Property, we can say that both $x = 0$ and $x^2 + 2x - 24 = 0$ .

Let's solve both. $x = 0$ is obvious, but we still need to solve our other term:

$x^2 + 2x - 24 = 0$

Set up

$(x + 6)(x - 4) = 0$

Factor

$x = -6, 4$

Apply the Zero Product Property

Our answer is x = -6, 0, 4.

4 0

3 years ago