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3 years ago

Just need help with the pic attached please

Mathematics

1 answer:

pentagon [3]3 years ago

3 0

The answer is D. y = 2x

EXPLANATION - PLEASE READ THOROUGHLY
The equation should be in slope intercept form, y = mx + b, where m is the slope and b is the y-intercept. y-intercept means the point where the graph intercepts the y-axis.
The y-intercept is 0.

Now, to find the slope,
slope = rise/run
Find two random points on the line, such as (0,0) and (1,2)
The rise (change in y value) is 2, and the run (change in x value) is 1.
So, slope = rise/run = 2/1 = 2

Back to the slope-intercept equation:
y = mx+b
y = 2x + 0
y = 2x

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2 years ago

A survey showed that 77% of us need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. 13 adults are randomly

earnstyle [38]

Using the binomial distribution, it is found that the probability that at least 12 of the 13 adults require eyesight correction is of 0.163 = 16.3%. Since this probability is greater than 5%, it is found that 12 is not a significantly high number of adults requiring eyesight correction.

For each person, there are only two possible outcomes, either they need correction for their eyesight, or they do not. The probability of a person needing correction is independent of any other person, hence, the binomial distribution is used to solve this question.

<h3>What is the binomial distribution formula?</h3>

The formula is:

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

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

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:

A survey showed that 77% of us need correction, hence p = 0.77.

13 adults are randomly selected, hence n = 13.

The probability that at least 12 of them need correction for their eyesight is given by:

$P(X \geq 12) = P(X = 12) + P(X = 13)$

In which:

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

$P(X = 12) = C_{13,12}.(0.77)^{12}.(0.23)^{1} = 0.1299$

$P(X = 13) = C_{13,13}.(0.77)^{13}.(0.23)^{0} = 0.0334$

Then:

$P(X \geq 12) = P(X = 12) + P(X = 13) = 0.1299 + 0.0334 = 0.163$

The probability that at least 12 of the 13 adults require eyesight correction is of 0.163 = 16.3%. Since this probability is greater than 5%, it is found that 12 is not a significantly high number of adults requiring eyesight correction.

More can be learned about the binomial distribution at brainly.com/question/24863377

7 0

2 years ago

HELPP PLEASEEEEEEEEEEEEEEEEEEEEEE<br><br> The sum of 6 and 12 divided by 9.

allsm [11]

6 + 12 = 18
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The answer is 2

Hope this helps

3 0

2 years ago

Read 2 more answers

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