*HELP!! I NEED ANSWERS ASAP!*

Which of the sets of ordered pairs represents a function? A = {(1, −5), (8, −5), (8, 7), (2, 9)} B = {(7, −4), (7, −2), (6, −3),

jek_recluse [69]

Answer:

Neither A or B

Step-by-step explanation:

Hello There!

In order for a set of ordered pairs to represent a function none of the x values can repeat

In answer choice A the x value 7 repeats therefore the set of ordered pairs do not represent a function

In answer choice B the x value 7 repeats therefore the set of ordered pairs do not represent a function

so we can conclude that neither set of ordered pairs represent a function

7 0

3 years ago

7. Which statement is true?

andrew-mc [135]

Answer:

D -6 is an integer

Step-by-step explanation:

An integer is a whole even or odd number :)

A like would wold help me :)

6 0

4 years ago

What is the 3d version of a oval

Allushta [10]

It looks like an easter egg... it is an oval that has three dimentions...its like when you strech a spere-shaped stess ball one way. if you are asking what 3d means it is when there is an up-down, left-right, and an behind-in and out .

i hope that is what you needed.

7 0

4 years ago

Read 2 more answers

A group of 18 students began raising money for a new community park. If each student reaches the goal of $980, how much will the

dedylja [7]

It’s B because 18x980 (that is every student) is equal to 17,640 dollars.

3 0

3 years ago

A new surgical procedure is successful with probability of p. Assume that the operation is performed 5 times and the results are

DaniilM [7]

Answer:

a) $P(X=5)=(5C5)(0.8)^5 (1-0.8)^{5-5}=0.32768$

And we can use the following excel code: "=BINOM.DIST(5,5,0.8,FALSE)"

b) $P(X=4)=(5C4)(0.6)^4 (1-0.6)^{5-4}=0.2592$

And we can use the following excel code: "=BINOM.DIST(4,5,0.6,FALSE)"

c) $P(X$

And the excel code would be: "=BINOM.DIST(1,5,0.3,TRUE)"

d) $E(X) =n*p= 5*0.5 =2.5$

e) $Var (X) = np(1-p) = 5*0.4*(1-0.4)=1.2$

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 know that:

$X \sim Binom(n=5, p)$