Mathematics High School

the highlighted question is wrong haha please i need this by 9

Answers

Answer 1

Answer: Choice D

x = 5, AB = 14, BC = 8

=====================================================

Explanation:

The triangles are similar, which can be proven through the angle angle theorem.

The similar triangles allow us to form the proportion below.

EB/DB = AB/BC

7/4 = (2x+4)/(x+3)

7(x+3) = 4(2x+4)

7x+21 = 8x+16

21-16 = 8x-7x

5 = x

x = 5 is part of the answer

Then we can use that x value to find the following

AB = 2x+4 = 2*5+4 = 14 is the length of AB

BC = x+3 = 5+3 = 8 is the length of BC

Related Questions

A cylinder has a radius of 14 yards. Its volume is 9847. 04 cubic yards. What is the height of the cylinder

Answers

[tex]\textit{volume of a cylinder}\\\\ V=\pi r^2 h~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ V=9847.04\\ r=14 \end{cases}\implies \begin{array}{llll} 9847.04=\pi (14)^2 h\implies \cfrac{9847.04}{\pi (14)^2}=h \\\\\\ 15.99\approx h \end{array}[/tex]

What is the probability that client H, the 80-year old you’re considering for a 10-year policy, lives to be 90 years old? Client H is a non-Hispanic white female, so look at the data in table 15.

Answers

Using it's concept, it is found that the probability is found looking at the table, considering that:

The number of desired outcomes is the number of non-Hispanic white females who lived to be 90 years old.The number of total outcomes is the number of non-Hispanic white females who are 80 years old.

What is a probability?

A probability is given by the number of desired outcomes divided by the number of total outcomes.

In this problem, these numbers of outcomes are taken from the data in the table, and the formula is applied.

More can be learned about probabilities at https://brainly.com/question/14398287

Answer:

Client H will have a 30.596 percent chance of living to 90 years old.

Step-by-step explanation:

[tex]\frac{30596}{100000} =0.30596\\\\\\0.30596= 30.596[/tex]

A popular video game claims that the average time needed to reach level 10 paladin is 3 hours with a standard deviation of 0.4 hours. james thinks that he and his four friends are more skilled than the average gamer because it took them an average of only 2.5 hours. which of the following is the most restrictive level that would validate his claim? upper-tail values a 5% 2.5% 1% critical z-values 1.65 1.96 2.58 1% 2.5% 5% 10%

Answers

The probability that the claim of James is correct is 1%.

What is a standard error?

The standard deviation of a statistic's sample distribution, or an approximation of that standard deviation, is its standard error. The standard error of the mean is the term used when the statistic is the sample mean.

In order to know if the claim of James is correct or not, firstly we need to determine the standard error. The standard error is the ratio of the standard deviation and the square root of the sample. Therefore, the standard error can be written as,

[tex]\rm Standard\ Error, SE =\dfrac{\sigma}{\sqrt n} = \dfrac{0.4}{\sqrt5} =0.178[/tex]

Thus, the standard error is 0.178.

Further, The z-score is defined as the distance from the sample to the population mean in units of standard error. Therefore, the z-score can be written as,

[tex]z = \dfrac{X-\mu}{SE}=\dfrac{(3- 2.5)}{0.178} = 2.81[/tex]

Using the Z-table in order to know the probability of the claim of James is correct or not, therefore, at this z-score, the probability is 0.9974≈1.00%.

Hence, the probability that the claim of James is correct is 1%.

Learn more about Standard Error:

https://brainly.com/question/2501218

A Machine produces 374 bolts and 33 minutes at the same rate how many minutes will it take to produce 272 bolts

Answers

Answer:

it would take the machine 24 minutes to produce 272 bolts.

express 0 in the form of x+iy..

Answers

Let's do

[tex]\\ \rm\Rrightarrow x+iy[/tex]

Put 0

[tex]\\ \rm\Rrightarrow 0+0i[/tex]

Anything multiplied by 0 is 0

Use the distributive property to write an expression that is equivalent to the expression below. 8(-x-1/2)

Answers

Answer:

I think is -8x-4 let me know if im right

Step-by-step explanation:

The diagram shows rectangles 1, 2, 3, and 4. WHICH ARE SIMILAR

Answers

i think 2 is similar to 4

The given rectangles 2 and 3 are similar.

What are similar figures?

Similar figures mean when two figures are of the same shape but are of different sizes. In other words, two figures are called similar when they both have a lot of the same properties but still may not be identical.

From the rectangle 2 and 3,

18/40 = 36/80

9/20 = 9/20

So, figure 2 and 3 are similar

Learn more about the similar figure here:

brainly.com/question/20368229.

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janet works at a computer supply store and earns 4.5% commission on her total sales.last week she earned $130.50 in commission.caculate her total sales for last week.

Answers

Divide the amount of commission by the percent:

130.50 / 4.5%

130.50 / 0.045 = $2,900

Answer: $2,900

2 1/3 - 1 1/2
Answer this for 15 points

Answers

Answer:

5/6

Step-by-step explanation:

2 1/3=2 2/6

1 1/2= 1 3/6

2 2/6- 1 3/6=5/6

Answer:

The answer is -19/6

Step-by-step explanation:

Hope that helps!

40 Points! Brainliest for correct answer! A student in a local high school prepared a survey question asking each student what his or her favorite male and female actors are. Which of the following methods will provide a sample that will represent the population of students as a whole?

A. Posting the question on the Internet.

B. Instant messaging every 9th person on the phonebook

C. Mailing a questionnaire to every student’s home.

D. Drawing 50 names from a hat containing the names of every student in the school.

Answers

Answer:

D. Drawing 50 names from a hat containing the names of every student in the school.

Sample which represents the population of students as a whole is given by drawing 50 names from a hat containing the names of every student in the school.

What is sample?

" Sample is the method of representing a small set of data to give overall picture of whole data. It is used in research."

According to the question,

Survey was conducted on students to know their favorite male and female actors.

As per the options given,

A. Posting the question on the internet does not give any sample. Here no number of students is mentioned. No sample is collected.

Option(A) is not the correct answer.

B. Instant messaging every 9th person on the phonebook also not provide any small set of group. No conclusion can be taken out from this information. It does not represent a sample.

Option(B) is not the correct answer.

C. Mailing a questionnaire to every student's home does not provide any number of students for sampling.

Option(C) is not the correct answer.

D. Drawing 50 names from a hat containing the names of every student in the school. Here 50 samples of students are taken to represents a population of students as a whole.

Hence, Option(D) is the correct answer.

Learn more about sample here

https://brainly.com/question/11045407

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PLEASE HELP WILL GIVE BRIANLIEST!!!

Answers

Point A is an outlier because if we were to put the best fit line along with the points according to the most amount of points, point A is the farthest away from the line and thus is the outlier.

Hope that helps!

Which values are solutions to 90 < –30p + 15? Check all that apply.

p = –10
p = 0
p = –2.5
p = 3
p = –5
p = 7.6

Answers

Answer:

p = -10 and p = -5

Step-by-step explanation:

p must be less than -2.5So, the possible value of p from the given options are,p = -10 and p = -5.

I have a headache. I need help ASAP- PLEASE!!!!!!

Answers

B, because there is 3 rows and 4 columns representing 1/4cups

The diagram shows a pair of parallel lines crossed by two
intersecting transversals.
a Work out the size of angle a. Give a reason for your answer.
b Work out the size of angle b. Give a reason for your answer.
c Work out the size of angle c. Give a reason for your answer.
d Work out the size of angle d. Give a reason for your answer.
e Work out the size of angle e. Give a reason for your answer

Answers

and tn e The diagram shows a pair of parallel lines crossed by two
intersecting transversals.
a Work out the size of angle a. Give a reason for your answer.
b Work out the size of angle b. Give a reason for your answer.
c Work out the size of angle c. Give a reason for your answer.
d Work out the size of angle d. Give a reason for your answer.
e Work out the size of angle e. Give a reason for your answer

Which of the following z-values, standard deviations, and sample sizes produce a margin of error of 0.95? m e = startfraction z times s over startroot n endroot endfraction z = 2.14; s = 4; n = 9 z = 2.14; s = 4; n = 81 z = 2.14; s = 16; n = 9 z = 2.14; s = 16; n = 81

Answers

The z-values, standard deviations, and sample sizes that produce a margin of error of 0.95 is z = 2.14; s = 4; n = 81.

What is the margin of error?

The margin of error is a statistic that expresses how much random sampling error there is in a survey's results. The wider the margin of error, the less confident one should be that a poll result reflects the outcome of a population-wide survey.

The formula of the margin of error is given by the formula,