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kobusy [5.1K]
2 years ago
14

Line segment Z E is the angle bisector of AngleYEX and the perpendicular bisector of Line segment G F. Line segment G X is the a

ngle bisector of AngleYGZ and the perpendicular bisector of Line segment E F. Line segment F Y is the angle bisector of AngleZFX and the perpendicular bisector of Line segment E G. Point A is the intersection of Line segment E Z, Line segment G X, and Line segment F Y.
Triangle G E F has angles with different measures. Point A is at the center. Lines are drawn from the points of the triangle to point A. Lines are drawn from point A to the sides of the triangle to form right angles and line segments A X, A Z, and A Y.
Which must be true?

Point A is the center of the circle that passes through points E, F, and G but is not the center of the circle that passes through points X, Y, and Z.
Point A is the center of the circle that passes through points X, Y, and Z but is not the center of the circle that passes through points E, F, and G.
Point A is the center of the circle that passes through points E, F, and G and the center of the circle that passes through points X, Y, and Z.
Point A is not necessarily the center of the circle that passes through points E, F, and G or the center of the circle that passes through points X, Y, and Z.
Mathematics
1 answer:
notsponge [240]2 years ago
3 0

i dont l know bro try getting close to God tho

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Maria drove from Los Angeles (elevation 330 feet) to Death Valley (elevation –282 feet). What is the difference in elevation bet
noname [10]
The answer is D because if you made a number line you would contrast them and there you get 612. hope it helpe
6 0
2 years ago
Read 2 more answers
ou have two parents, four grandparents, eight great-grandparents, and so forth. (a) If all your ancestors were distinct, what wo
Maslowich

Answer:

Part A:

2^{40}-2\\=1.0995*10^{12} ancestors

Part B:

Generations Age=25*39=975 years

Part C:

  1. Some ancestors on different branches of the family tree must be the same.
  2. There could not have been 39 generations in my line of ancestry.

Step-by-step explanation:

Given Data:

Two Parents, Four Grand Parents, Eight great Grand Parents.

Generation=39

Solution:

Part A:

From given data Following series is made:

2+2^2+2^3+.........+2^{39}

Now, Above series will become:

2[1+2+2^2+......+2^{38}]

From geometric Sequence:

2[\frac{2^{38+1}-1}{2-1} ]

2^{40}-2\\=1.0995*10^{12} ancestors

Part B:

Generations Age=years*Number of generations

Generations Age=25*39=975 years

Part C:

Number of people lived= 10^11

Ancestors=1.0995*10^{12} ancestors

10^{11}

It means ancestors are not distinct, it means:

  1. Some ancestors on different branches of the family tree must be the same.
  2. There could not have been 39 generations in my line of ancestry.
5 0
2 years ago
To complete her holiday wrapping, Bella needs identical strips of ribbon measuring 3.5 feet each. She has 85 feet of ribbon in t
MA_775_DIABLO [31]

Bella can cut 24 pieces of ribbon from this long strip

<u>Solution:</u>

Given that Bella has 85 feet of ribbons in total

She needs identical strips of ribbon measuring 3.5 feet each

To find: Number of peices of ribbon can she cut from long strip

Number of peices of ribbon can she cut from long strip can be calculated by dividing the total feet of ribbon she has by length of identical strips she needs

<em><u>Mathematically written as:</u></em>

\text { Number of Strip that can be cut }=\frac{\text { Total length of ribbon }}{\text { Length of each piece }}

\begin{array}{l}{\text { Number of Strip that can be cut }=\frac{85}{3.5}} \\\\ {\text { Number of Strip that can be cut }=24.28 \approx 24}\end{array}

Hence , the number of strip can be 24 each of size 3.5 feet

6 0
2 years ago
A website advertises job openings on its website, but job seekers have to pay to access the list of job openings. The website re
nataly862011 [7]

Answer:

The 90% confidence interval would be given by (57.006;62.994)  

Step-by-step explanation:

Previous concepts

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

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".  

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

\bar X=60 represent the sample mean  

\mu population mean (variable of interest)  

\sigma=10 represent the population standard deviation  

n=30 represent the sample size  

Assuming the X follows a normal distribution  

X \sim N(\mu, \sigma=10)

The sample mean \bar X is distributed on this way:

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

The confidence interval on this case is given by:

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}} (1)

The next step would be find the value of \z_{\alpha/2}, \alpha=1-0.90=0.1,\alpha/2 =0.05 and z_\alpha/2=1.64  

Using the normal standard table, excel or a calculator we see that:  

z_{\alpha/2}=1.64

Since we have all the values we can replace:

60 - 1.64\frac{10}{\sqrt{30}}=57.006  

60 + 1.64\frac{10}{\sqrt{30}}=62.994  

So on this case the 90% confidence interval would be given by (57.006;62.994)  

5 0
2 years ago
In the study of population dynamics one of the most famous models for a growing but bounded population is the logistic equation
MA_775_DIABLO [31]

Answer:

If  K is a constant of integration, then

P = {\displaystyle \frac{1}{b/a + Ke^{-at}}}

Step-by-step explanation:

According to the information of the problem we know that

{\displaystyle \frac{dP}{dt} = P(a-bP) }

Remember that in general a Bernoulli equation is an equation of the type

y' + p(x)y = q(x)y^n

And the idea to solve the equation is to substitute

{ \displaystyle v = y^{1-n}}

Now for this case

{\displaystyle \frac{dP}{dt} - Pa  = -bP^2}

Then we substitute

v = P^{1-2} = P^{-1}

Therefore

P = v^{-1}

and if you compute the derivative of that you get that

{\displaystyle \frac{dP}{dt} = -v^{-2} \frac{dv}{dt}}

Now you substitute that onto the original equation and get

{\displaystyle \frac{dP}{dt} - Pa  = -bP^2}

{\displaystyle  -v^{-2} \frac{dv}{dt} - v^{-1} = -bv^{-2}

If you multiply everything by  -v^2  you get that

{\displaystyle \frac{dv}{dt} + v = b }

That's a linear differential equation and the solution would be

v = {\displaystyle \frac{b}{a} + Ke^{-at}} = P^{-1}

Where K is a constant of integration, then

P = {\displaystyle \frac{1}{b/a + Ke^{-at}}}

3 0
2 years ago
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