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3 years ago

Which graph represents a function with direct variation?

Mathematics

1 answer:

Sladkaya [172]3 years ago

5 0

Answer:

a line passing through (negative 4, 2), (0, 0) and (4, negative 2).

Step-by-step explanation:

A function exhibiting direct variation MUST pass through the origin, (0, 0), and the graph must be a straight line. The answer that satisfies these requirements is a line passing through (negative 4, 2), (0, 0) and (4, negative 2).

<h3>PLEASE MARK ME BRAINLIEST.</h3>

You might be interested in

When dealing with the number of occurrences of an event over a specified interval of time or space, the appropriate probability

sdas [7]

Answer:

a) Poisson distribution

use a Poisson distribution model when events happen at a constant rate over time or space.

Step-by-step explanation:

Poisson distribution

Counts based on events in disjoint intervals of time or space produce a Poisson random variable.

A Poisson random variable has one parameter, its mean λ

The Poisson model uses a Poisson random variable to describe counts in data.

use a Poisson distribution model when events happen at a constant rate over time or space.

Hyper geometric probability distribution:-

The Hyper geometric probability distribution is a discrete probability distribution that describes the probability of successes (random draws for which the object drawn has a specified feature) in draws without replacement, from a finite population of size that contains exactly objects with that feature where in each draw is either a success or failure.

This is more than geometric function so it is called the Hyper geometric probability distribution 

Binomial distribution

The number of successes in 'n' Bernoulli trials produces a Binomial distribution . The parameters are size 'n' success 'p' and failure 'q'
The binomial model uses a binomial random variable to describe counts of success observed for a real phenomenon.

Finally use a Binomial distribution when you recognize distinct Bernoulli trials.

Normal distribution:-

normal distribution is a continuous distribution in which the variate can take all values within a range.

Examples of continuous distribution are the heights of persons ,the speed of a vehicle., and so on

Associate normal models with bell shaped distribution of data and the empirical rule.

connect Normal distribution to sums of like sized effects with central limit theorem

use histograms and normal quantile plots to judge whether the data match the assumptions of a normal model.

Conclusion:-

Given data use a Poisson distribution model when events happen at a constant rate over time or space.

3 0

3 years ago

What is the pattern rule of 6 11 18 27

Usimov [2.4K]

Answer:

The pattern rule is that we add by increasing odd integers.

Step-by-step explanation:

The first two numbers have a difference of 5. The next two have a difference of 7. The next two after that have a difference of 9.

5, 7 and 9 are increasing odd integers.

So, we know the next number would be 11 higher than the last.

6 0

3 years ago

The mean number of words per minute (WPM) read by sixth graders is 84 with a standard deviation of 15 WPM. If 188 sixth graders

Anna007 [38]

Answer:

0.1836 = 18.36% probability that the sample mean would differ from the population mean by greater than 1.46 WPM

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

The mean number of words per minute (WPM) read by sixth graders is 84 with a standard deviation of 15 WPM.

This means that $\mu = 84, \sigma = 15$

Sample of 188

This means that $n = 188, s = \frac{15}{\sqrt{188}}$

What is the probability that the sample mean would differ from the population mean by greater than 1.46 WPM?

Greater than 84 + 1.46 = 85.46 or less than 84 - 1.46 = 82.54. Since the normal distribution is symmetric, these probabilities are equal, so we find one of them and multiply by 2.

Probability is is less than 82.54.

P-value of Z when X = 82.54. So

$Z = \frac{X - \mu}{\sigma}$

By the Central Limit Theorem

$Z = \frac{X - \mu}{s}$

$Z = \frac{82.54 - 84}{\frac{15}{\sqrt{188}}}$

$Z = -1.33$

$Z = -1.33$ has a p-value of 0.0918

2*0.0918 = 0.1836

0.1836 = 18.36% probability that the sample mean would differ from the population mean by greater than 1.46 WPM

3 0

3 years ago

Please help I'm so confused

blagie [28]

Answer:

(-2, -4), (-1, -1), (0, 0), (1, -1), (2, -4)

Step-by-step explanation:

You plug in x values to get the y values are dot-in the points!

y = -x^2

You plug in -2 and get -(2)^2 = -(4) = -4

Same thing with all other values.

3 0

3 years ago

four friends want to play a game. in how many ways can the friends from teams, if both team dont have name

SVETLANKA909090 [29]

Answer:

So I’m guessing you want either how to get a name or name ideas?

Step-by-step explanation:

1. Compare the friend’s favorite things and lump them together (lets say one likes ballet and another likes swans so the name would be the Graceful Swans)

2.Pick a name that describes what you like about your friendship (lets say they like the love that the friends give to one another so lets say Loving Friends)

NAME IDEAS

Hunting Pack

Graceful Swans

Cloudy Skies

DREAM TEAM

Windy days

IF YOU WANT TO DIVIDE THE FRIENDS THEN THERE WOULD BE TWO FRIENDS ON EACH TEAM

Hope this helped

Plz mark Brainliest

Dont forget to smash that heart at the bottom <3

Have a great day!

7 0

3 years ago