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3 years ago

What is a diagram meaning?

2 answers:

5 0

<span>a simplified drawing showing the appearance, structure, or workings of something; a schematic representation.</span>

serg [7]3 years ago

3 0

A drawing or a graph of something specific

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Use the Distributive Property to expand this expression.

viktelen [127]

Answer:

C is the correct answer

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

What is 240 divided by 6 using a double number line?

VMariaS [17]

Answer:

Step-by-step explanation:

You have to divid 240 by 6

5 0

4 years ago

If the measure of the angles of a traingle are represented by 2x, 3x-15, and 7x+15, the traingle is

pshichka [43]

X=15degrees
The angle measurements are 30, 30, and 120 so it is an isosceles

6 0

4 years ago

For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 50

Volgvan

Answer:

$P(\bar X>530)=1-0.808=0.192$

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".

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

$X \sim N(\mu=505,\sigma=170)$

And let $\bar X$ represent the sample mean, the distribution for the sample mean is given by:

$\bar X \sim N(\mu,\frac{\sigma}{\sqrt{n}})$

On this case $\bar X \sim N(505,\frac{170}{\sqrt{35}})$

2) Calculate the probability

We want this probability:

$P(\bar X>530)=1-P(\bar X$

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

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

If we apply this formula to our probability we got this:

$P(\bar X >530)=1-P(Z$

$P(\bar X>530)=1-0.808=0.192$

3 0

3 years ago

María regala a su padre un best seller por su cumpleaños. Elige la encuadernación de tapas duras que tiene forma de prisma recta

iris [78.8K]

Answer:

<h2>María used only 792 square centimeters to cover the best seller.</h2>

Step-by-step explanation:

The volume of the best seller is about a rectangular prism, which is

$V= w \times l \times h$

Where $w$ is width, $l$ is length and $h$ is height.

In this case, we have

$w=12 \ cm\\l= 18 \ cm\\h= 6 \ cm$

Replacing values in the formula, we have

$V=12cm \times 18cm \times 6cm=1,296cm^{3}$

Now, according to the problem, 10% of paper covers the book, that means we need to find the suface area and then find the 90% of the paper missing. The formula for surface area is

$S=2wl+2lh+2hw$

Replacing values, we have

$S=2(12)(18)+2(18)(6)+2(6)(12)=432+216+144=792cm^{2}$

If 792 square centimeters is 10% of the total paper, then

$x=100\%\frac{792cm^{2} }{10\%} =7,920cm^{2}$

Therefore, there is 7,920 square centimeters of papers, but María used only 792 square centimeters to cover the best seller.

4 0

3 years ago