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3 years ago

Are the following triangles similar by the angle-angle similarity theorem? will make you BRAINLIEST

Mathematics

1 answer:

WITCHER [35]3 years ago

5 0

Answer:

The answer is c i think

Step-by-step explanation:

they arent congruent pairs and they all have angles

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Over the past decade, the mean number of hacking attacks experienced by members of the Information Systems Security Association

fredd [130]

Answer:

$P(X>600)=P(\frac{X-\mu}{\sigma}>\frac{600-\mu}{\sigma})=P(Z>\frac{600-510}{14.28})=P(z>6.302)$

And we can find this probability using the complement rule and the normal standard distribution and we got:

$P(z>6.302)=1-P(z$

Step-by-step explanation:

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".

Solution to the problem

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

$X \sim N(510,14.28)$

Where $\mu=510$ and $\sigma=14.28$

We are interested on this probability

$P(X>600)$

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

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

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

$P(X>600)=P(\frac{X-\mu}{\sigma}>\frac{600-\mu}{\sigma})=P(Z>\frac{600-510}{14.28})=P(z>6.302)$

And we can find this probability using the complement rule and the normal standard distribution and we got:

$P(z>6.302)=1-P(z$

7 0

3 years ago

You have 1200 feet of fencing and you want to make two fenced in enclosures by splitting one enclosure in

NARA [144]

Let x = length and y = width

You would have 2 lengths, so 2x and 3 widths, so 3y

Those need to equal total length of fence:

2x + 3y = 1200

The 3 widths would equal total fence minus the 2 lengths:

3Y = 1200-2x

Solve for y: y = 400 -2/3x

Area = length x width = xy. Replace y :

Area = x(400-2/3x) = 400x-2/3x^2

Differentiate:

400-4x/3 =0

4x/3 = 400

4x = 1200

X = 300

Y = 400-2/3(300) = 200

The dimension would be 300 ft x 200 ft

7 0

3 years ago

the tennis team wants to purchase tshirts for its members . company A charges a$20 setup fee and $8 per shirt company B charges

MA_775_DIABLO [31]

Answer:

1) 5 2) the first one

Step-by-step explanation:

since the first time multiplying 8 to get a two digit number ending in zero is forty, i multiplied both by 5

2) 8 times 12= 96+20=116

i hope this helps u

pls give a brainliest (i only need one more!) and a thx

6 0

3 years ago

A square field has a perimeter of 48cm find the area of the field

BabaBlast [244]

Answer:

2,304

Step-by-step explanation:

u multiply one length by it widgth so 48 x 48

7 0

3 years ago

Read 2 more answers

A frozen dinner at the grocery store is purchased for $2.20 a wholesale and is a marked up for 40 percent. a customer wants to b

iren [92.7K]

First of all, you surely do have a lot of incorrect grammar in your statement. I can't understand a word that you are asking.

3 0

3 years ago