When rotated about its center, a regular nonagon has__
rotational symmetries. In addition to rotational symmetry, a regular nonagon has __
lines of reflectional symmetry.

Answers

Answer 1

Answer:

Symmetry in a regular nonagon

A regular nonagon has 9 lines of symmetry and a rotational symmetry of order 9, meaning that it can be rotated in such a way that it will look the same as the original shape 9 times in 360°. Nine 40° of rotation about the center.

Step-by-step explanation:


Related Questions

20 POINTS HELP!!
Find the value of x and y

Answers

Answer:

x=64 degrees

Step-by-step explanation:

Assume: Triangle CDE is a right triangle and Angle D is a right angle. What is the length of the missing side? A) 26 . B) 25 . C) 24 . D) 23 .​

Answers

Answer:

Length of base DE = 24 units

Step-by-step explanation:

Given:

In given triangle, right angle at D

SO,

Perpendicular of given triangle = 32 unit

Hypotenuse of given triangle = 40 unit

Find:

Length of base DE

Computation:

Using Pythagoras theorem

Base = √Hypotenuse² - Perpendicular²

Length of base DE = √Hypotenuse of given triangle² - Perpendicular of given triangle²

Length of base DE = √40² - 32²

Length of base DE = √1,600 - 1,024

Length of base DE = √576

Length of base DE = 24 units

(help) wHICH RAYS FORM THE SIDES OF IHG

Answers

Answer:

B and D

Step-by-step explanation:

A ray is just the line so the rays are IH, and HI. It is not IH because that is a line segment. It is not GI because it goes across. Therefore, the answer is B and D.

Answer:

a d

Step-by-step explanation:

A golden rectangle has a length of 5 cm. Find the area of the rectangle to the nearest square centimeter.

Answers

Answer: is it 25? i am bad at math but i am guessign

Step-by-step explanation:

Write down the integer values that satisfy the inequality -5<_x<3

Answers

Answer:

(-4,-3,-2,-1,0,1,2)

Step-by-step explanation:

..........i hope it is............

HELP!! ASAP!! WILL give BRAINLY! NO LINKS!! Will report them!

Answers

Answer:

Choose ( A)

A. y =|x/2| – 5

The original price of sunglasses is $25. The sale price is 20% off the original price. How much money will be saved (what is the discount)?​

Answers

Step-by-step explanation:

5  $

Find the volume of this triangular prism.
25 cm
10 cm
10 cm

Answers

Answer:

volume of the triangular prism

[tex] (\frac{1}{2} \times 10 \times 10) \times 25 \\ 1250 {cm}^{3} [/tex]

Answer:

1250cm2

Step-by-step explanation:

BY: [tex]ζBenjamin[/tex]

I WILL GIVE BRAINLIEST IF IT'S CORRECT AND THE BEST ANSWER

Write a problem that can be answered using the line plot. ​

Answers

Answer:

What is the median amount of salt left

Step-by-step explanation:

Finding missing angles

Answers

Answer:

sorry i just want to get points

Anne has 198. apples and buys 285
apples and 693 green apples.
How much does anne
have?


Answers

Answer:

1176 apples

Step-by-step explanation:

198 + 285 + 693 = 1176

Step-by-step explanation:

your answer will be 1,176 apples. Just add them up :)

3(x+3) [tex]\geq[/tex] 4(x-4)

Answers

Answer:

12x2-12x-144 thats the answer

Step-by-step explanation:

A store raises its prices on granola bars by 15%. The original cost of the granola bars is $3.50. What is the new cost of granola bars?

Answers

Answer:

$4.02

Step-by-step explanation:

Who can do this I confused except for number 1

Answers

What grade is this, then I can see

Animals in an experiment are to be kept under a strict diet. Each animal should receive 60 grams of protein and 9 grams of fat. The laboratory technician is able to purchase two food mixes: Mix A has 30% protein and 6% fat; mix B
has 50% protein and 5% fat. How many grams of each mix should be used to obtain the right diet for one animal?
One animal's diet should consist of grams of Mix A

Answers

Answer:

hey there buddy

Step-by-step explanation:

URGENT need help CLICK TO SEE

Answers

Step-by-step explanation:

Integers : 26.00, 0.35, - 2

Not integers: 21/3, 1/4

Answer:

Interger: 0.35, -2, 1/4

Not an Interger: 26.00, 21/3

Step-by-step explanation:

Decimals, negatives, and fraction all fall into the category of integers along with others

0.35, -2, 1/4 fall into the category of either fractions, negatives, or decimals which makes them, in turn, fall into the category of integers

26.00 looks like a decimal but since the 0's don't need to be there, it's  actually 26, which is not a integer

21/3 is an improper fraction which, when simplified, is 7, which is not an integer

I may be wrong, but this is what I got

I hope this helps!

Find the area of the parallelogram shown.

Answers

Where is the parallelogram?
Can you put the photo

A certain academic program boasts that 87% of their graduates find full-time employment in their field within the first year of graduation. The academic director is concerned that market factors may have adversely affected the full-time placement rate and decides to perform a Hypothesis Test to see if her concern is warranted. The hypothesis test is performed at a 5% significance level and the resulting p-value is 0.07. Assume that all conditions for testing have been met and choose the statement that contains the correct conclusion.

a. there is not sufficient sample evidence to conclude that the full-time placement rate is now less than 87% because the p-value is greater than 0.05.
b. there is sufficient sample evidence to conclude that the full-time placement rate is now less than 87% because the p-value is greater than 0.05.
c. there is sufficient sample evidence to conclude that the full-time placement rate is 87% because the p-value is greater than 0.05.
c. there is not sufficient sample evidence to conclude that the full-time placement rate is 87% because the p-value is greater than 0.05.

Answers

Answer:

Option A, there is not sufficient sample evidence to conclude that the full-time placement rate is now less than 87% because the p-value is greater than 0.05.

Step-by-step explanation:

Here the Null hypothesis would be

H0: 87% of the graduates find full-time employment in their field within the first year of graduation

H1: Less than 87% of the graduates find full-time employment in their field within the first year of graduation

Here the p values is 0.07.

Since the p value is greater than 0.05, there are not enough evidences to reject the hull hypothesis.

Hence, option A is correct

Since the p-value is greater than the significance level, the correct option is:

a. there is not sufficient sample evidence to conclude that the full-time placement rate is now less than 87% because the p-value is greater than 0.05.

At the null hypothesis, it is tested if the proportion is still of 0.87, that is:

[tex]H_0: p = 0.87[/tex]

At the alternative hypothesis, it is tested if it has decreased, that is:

[tex]H_1: p < 0.87[/tex]

Since the p-value is greater than the significance level, we do not reject the null hypothesis, and hence, the correct option is A.

A similar problem is given at https://brainly.com/question/25831511

Five-sixths of the students in a math class passed the first test. If there are 36 students in the class, how many did not pass the test? *

Answers

5/6=36/x => 5x/5=216/5 => 43.2

Solve the triangle. Round decimal answers to the nearest tenth.

Answers

Answer:

you round the 48 so it's 50.

First person to answer correctly get marked brainly
How many roots, real or complex does the polynomial have in all

Answers

Answer: i need points but i think its 4

Step-by-step explanation:

What's the output of a system modeled by the function ƒ(x) = x5 – x4 + 9 at x = 2?
Please Help

A)

24

B)

16

C)

30

D)

25

Answers

Answer:

a

Step-by-step explanation:

please make me Brianlist please

Help will give branliest

Answers

Answer:

They make heart shapes! hearts look like <3

Find the value of 5!
O A. 3125
O B. 20
O C. 120
OD. 25

Answers

Answer:

The answer is 120

Step-by-step explanation:

5! = 120

Thus, The answer is 120

-TheUnknownScientist

PLS HELP ITS URGENT!!


The circumference of the ball is 9.4 inches. What is the approximate surface area and volume of the ball? Round your answers to the nearest unit.

The surface area of the ball is approximately

square Inches.

The volume of the ball is approximately

cubic Inches.

Answers

Answer:

SA= 28 in^2

V= 14 in^3

Step-by-step explanation:

circumference= 2πr

9.4 = 2πr

r = 1.496

surface area of a ball = [tex]4\pi r^{2}[/tex]

= [tex]4\pi (1.496)^{2}[/tex]

=28 in^2

volume of a ball= [tex]\frac{4}{3} \pi r^{3}[/tex]

= [tex]\frac{4}{3} \pi (1.496)^{3}[/tex]

=14 in^3

6+2(3x4) divide 2 + 3-4

Answers

Step-by-step explanation:

hope it is helpful to you

answer is 16, hope that’s right

Recent research commissioned by Vodafone suggests that older workers are the happiest employees (BBC News, July 21, 2008). The report documents that 70% of older workers in England feel fulfilled, compared with just 50% of younger workers. A demographer believes that an identical pattern does not exist in Asia. A survey of 120 older workers in Asia finds that 75 feel fulfilled. A similar survey finds that 58% of 210 younger workers feel fulfilled.
At a 5% level of significance, test if older workers in Asia feel less fulfilled than their British counterparts.
a-1. Select the null and the alternative hypotheses.
H0: p ≥ 0.70; HA: p < 0.70
H0: p = 0.70; HA: p ≠ 0.70
H0: p ≤ 0.70; HA: p > 0.70
a-2. Calculate the sample proportion. (Round your answer to 3 decimal places.)
Sample proportion
a-3. Calculate the value of test statistic. (Negative value should be indicated by a minus sign. Round your intermediate calculations to 4 decimal places and final answer to 2 decimal places.)
Test statistic
a-4. Calculate the p-value of the test statistic.(Round your intermediate calculations to 4 decimal places. Round "z" value to 2 decimal places and final answer to 4 decimal places.)
p-value
a-5. What is the conclusion?
Older workers in Asia feel less fulfilled
Older workers in Asia do not feel less fulfilled
At a 5% level of significance, test if younger workers in Asia feel more fulfilled than their British counterparts.
b-1. Select the null and the alternative hypotheses.
H0: p = 0.50; HA: p ≠ 0.50
H0: p ≥ 0.50; HA: p < 0.50
H0: p ≤ 0.50; HA: p > 0.50
b-2. Calculate the sample proportion. (Round your answer to 2 decimal places.)
Sample proportion
b-3. Calculate the value of test statistic. (Round your intermediate calculations to 4 decimal places and final answer to 2 decimal places.)
Test statistic
b-4. Calculate the p-value of the test statistic.(Round your intermediate calculations to 4 decimal places. Round "z" value to 2 decimal places and final answer to 4 decimal places.)
p-value
b-5. What is the conclusion?
Younger workers in Asia feel more fulfilled
Younger workers in Asia do not feel more fulfilled

Answers

Answer:

H0: p ≥ 0.70; HA: p < 0.70

Sample proportion = 0.625

Test statistic = -1.79

Pvalue = 0.0367

Older workers in Asia feel less fulfilled

B.)

H0: p ≤ 0.50; HA: p > 0.50

0.58

2.35

0.0094

younger workers in Asia feel more fulfilled

Step-by-step explanation:

1.)

H0: p ≥ 0.70;

HA: p < 0.70

The test statistic :

(Phat - p) /sqrt(p(1-p)/n)

Phat = x / n = 75/120 = 0.625

1 - p = 1 - 0.7 = 0.3

(0.625-0.70) / sqrt(0.7*0.3/120)

-0.075 / 0.0418330

= - 1.79

Pvalue FROM Zscore calculator :

Pvalue = 0.0367

α = 5% = 0.05

Pvalue < α ; Reject then Null and conclude older workers in Asia feel less fulfilled than their British counterparts.

B.)

H0: p ≤ 0.50; HA: p > 0.50

Sample proportion, phat = 58% = 0.58

The test statistic :

(Phat - p) /sqrt(p(1-p)/n)

(0.58 - 0.50) / sqrt(0.58*0.42)/210)

0.08 / 0.0340587

Test statistic = 2.35

Pvalue FROM Zscore calculator :

Pvalue = 0.0094

α = 5% = 0.05

Pvalue < α ; Reject then Null and conclude younger workers in Asia feel more fulfilled than their British counterparts

How many times greater is the value of the 9 in 94,316 than the value of the 9 in 69,147

Answers

Answer:

Step-by-step explanation

90,000 is 20,853 greater than 69,147

According to data from the United States Elections Project, only 38 percent of eligible voters voted in the 2014 elections. For random samples of size 40, which of the following best describes the sampling distribution of p, the sample proportion of people who voted in the 2014 elections?
A. The sampling distribution is approximately normal, with mean 0.36 and standard deviation 0.076.
B. The sampling distribution is approximately normal, with mean 0.36 and standard deviation 0.006.
C. The sampling distribution is skewed to the right, with mean 0.64 and standard deviation 0.006.
D. The sampling distribution is approximately normal, with mean 0.64 and standard deviation 0.076.
E. The sampling distribution is skewed to the left, with mean 0.36 and standard deviation 0.076.

Answers

Answer:

I think it's either A or E sorry if I'm wrong

Using Central Limit Theorem, it is found that the option which best describes the sampling distribution of p, the sample proportion of people who voted in the 2014 elections is:

A. The sampling distribution is approximately normal, with mean 0.36 and standard deviation 0.076.

The Central Limit Theorem states that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]

In this problem:

The proportion is [tex]p = 0.38[/tex].Samples of size 40, hence [tex]n = 40[/tex].

Hence, the mean and standard error are given by:

[tex]\mu = p = 0.38[/tex]

[tex]s = \sqrt{\frac{p(1 - p)}{n}} = \sqrt{\frac{0.38(0.62)}{40}} = 0.076[/tex]

Also approximately normal, hence, option A is correct.

To learn more about the Central Limit Theorem, you can take a look at https://brainly.com/question/16695444

A student's four test scores were 88, 91, 93 and 86. What score would be needed on a fifth test to obtain a mean of 90 for all five test?
A. 90
B. 92
C. 95
D. 96

Answers

Answer:

92

Step-by-step explanation:

88 + 91 + 93 + 86 = 358

90*5 = 450

therefore the fifth test has to be 450 - 358 = 92

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