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3 years ago

Could you help me with this?

Mathematics

2 answers:

Mekhanik [1.2K]3 years ago

5 0

Answer: X= 4

I know it’s right on e2020

IrinaK [193]3 years ago

3 0

Answer:

x = 4

Step-by-step explanation:

cos45° = $\frac{x}{4\sqrt{2} }$

sin45° = $\frac{x}{4\sqrt{2} }$

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How do you identify the constant of proportionality when given a graph?

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Find two easy points on a graph and go over however many times you need to rise and how many times to you run.

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3 years ago

A company developed the following linear model to help budget annual expenses over time. In this model, x represents the number

ollegr [7]

The only reasonable answer I could think for this is "A.<span>The company's expense budget for 2009 was $189,785."
I believe this because since x is the years after 2009 then you wouldn't times that by the expense budget for that year or any year eliminating B and C. When finding the total expense budget for this you would have to take in account the budget from 2009 so that would lead it to add 189,758. Since we are talking about after 2009 then D would be eliminated since 2008 is before 2009.
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3 years ago

For a given IQ test, an individual is considered a genius if their score falls more than three standard deviations from the mean

ki77a [65]

Answer:

$P(Z>3) = 1-P(Z$

So then the probability that an individual present and IQ higher than 3 deviation from the mean is 0.00135

And if we find the number of individuals that can be considered as genius we got: 0.00135*1500=2.025

And we can say that the answer is a.2

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

2) Solution to the problem

Let X the random variable that represent the IQ scores of a population, and for this case we know the distribution for X is given by:

$X \sim N(\mu=?,\sigma=?)$

We are interested on this probability

$P(X>X+3\mu)$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

And we can find the following probablity:

$P(Z>3) = 1-P(Z$

So then the probability that an individual present and IQ higher than 3 deviation from the mean is 0.00135

And if we find the number of individuals that can be considered as genius we got: 0.00135*1500=2.025

And we can say that the answer is a/2.0

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3 years ago

A 110 point final exam is made up of 50 question some questions are worth 4 points. How many of each type of question are on the

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There were 5 four point questions and There were 45 two point questions

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3 years ago

What is the solution for m >7/12

Over [174]

Answer:

Inequality Form: m > 7/12

Interval Notation: (7/12, ∞)

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3 years ago