1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Firdavs [7]
3 years ago
6

Please help and thank you

Mathematics
1 answer:
Gekata [30.6K]3 years ago
3 0

Answer:

A. 11\frac{5}{8}\textrm{ inches}

Step-by-step explanation:

Given:

The regular polygon is a decagon having 10 sides.

Perimeter of the given polygon is,

P=116\frac{1}{4}\textrm{ inches}=116.25\textrm{ inches}.

We know that, perimeter of a regular polygon of n sides is given as,

P=na where, a is the length of each side.

Here, n=10,P=116\frac{1}{4}\textrm{ in}

Plug in these values and solve for a. This gives,

P=na\\116\frac{1}{4}=10a\\116.25=10a\\a=\frac{116.25}{10}=11.625=11+\frac{625}{1000}=11+\frac{5}{8}=11\frac{5}{8}\textrm{ in}

Therefore, the side length of the given polygon is 11\frac{5}{8}\textrm{ inches}

You might be interested in
How many solutions does this equation have?<br><br> a + 3 + 2a = -1 + 3a + 4
vekshin1
-8a+4 im pretty sure 

4 0
3 years ago
Read 2 more answers
Some types of algae have the potential to cause damage to river ecosystems. Suppose the accompanying data on algae colony densit
Phantasy [73]

Answer:

y=-2.95836 x +234.56159

Step-by-step explanation:

We assume that th data is this one:

x: 50, 55, 50, 79, 44, 37, 70, 45, 49

y: 152, 48, 22, 35, 43, 171, 13, 185, 25

a) Compute the equation of the least-squares regression line. (Round your numerical values to five decimal places.)For this case we need to calculate the slope with the following formula:

m=\frac{S_{xy}}{S_{xx}}

Where:

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}

So we can find the sums like this:

\sum_{i=1}^n x_i =50+ 55+ 50+ 79+ 44+ 37+ 70+ 45+ 49=479

\sum_{i=1}^n y_i =152+ 48+ 22+ 35+ 43+ 171+ 13+ 185+ 25=694

\sum_{i=1}^n x^2_i =50^2 + 55^2 + 50^2 + 79^2 + 44^2 + 37^2 + 70^2 + 45^2 + 49^2=26897

\sum_{i=1}^n y^2_i =152^2 + 48^2 + 22^2 + 35^2 + 43^2 + 171^2 + 13^2 + 185^2 + 25^2=93226

\sum_{i=1}^n x_i y_i =50*152+ 55*48+ 50*22+ 79*35+ 44*43+ 37*171+ 70*13+ 45*185+ 49*25=32784

With these we can find the sums:

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=26897-\frac{479^2}{9}=1403.556

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}=32784-\frac{479*694}{9}=-4152.22

And the slope would be:

m=-\frac{-4152.222}{1403.556}=-2.95836

Nowe we can find the means for x and y like this:

\bar x= \frac{\sum x_i}{n}=\frac{479}{9}=53.222

\bar y= \frac{\sum y_i}{n}=\frac{694}{9}=77.111

And we can find the intercept using this:

b=\bar y -m \bar x=77.1111111-(-2.95836*53.22222222)=234.56159

So the line would be given by:

y=-2.95836 x +234.56159

7 0
3 years ago
Which pandemic killed thousands in Mexico and millions worldwide in 1918?
Gnoma [55]
The Spanish influenza killed thousands in Mexico and millions worldwide in 1918. 

The Influenza Epidemic surprisingly surpassed the total number of people dead in World War I, as more were killed from the epidemic. It ended up killing over more than 50 million people around the world. It was said that the flu pandemic was caused by tension of H1N1 flu and usually went after young, healthy adults.
6 0
3 years ago
Read 2 more answers
PLEASE HELLLLLLPPPPP!!!!!
77julia77 [94]

D, while numbers is the answer

5 0
3 years ago
What are the zeroes of f(x) = x2 − 6x + 8? (4 points) x = −4, 2 x = −4, −2 x = 4, 2 x = 4, −2
babymother [125]

Hey there! :)

Answer:

Third option. x = 2, and x = 4.

Step-by-step explanation:

Find the zeros of this quadratic equation by factoring:

f(x) = x² - 6x + 8

Becomes:

f(x) = (x - 4)(x - 2)

Set each factor equal to 0 to solve for the roots;

x - 4 = 0

x = 4

x - 2 = 0

x = 2

Therefore, the zeros of this equation are at x = 2, and x = 4.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Chloe has 20 unit cubes.How many different rectangular prisms can she build with the cubes?
    10·2 answers
  • F (x) = x - 5, what marches f (-1)
    6·1 answer
  • What are the zeros of f(x) = x2 - 12x + 36?​
    7·1 answer
  • Help me in Geometry!!!<br> I don’t know nothing about this help.<br> PHOTO ABOVE
    13·1 answer
  • Can someone double check this?
    8·1 answer
  • Can you help me pls 6th grade
    11·1 answer
  • Please help you will get 59 points <br> I do not understand soo please I need your assistants.
    13·1 answer
  • An equation is shown. x + 3 = 8.5 what is the solution to the equation
    12·2 answers
  • 8 + 3 + 2a = -1 + 3a + 4
    6·2 answers
  • Kahlia needs $468.75 to buy herself a new chromebook. She plans to wash 125 cars in her neigborhood to earn enough money to but
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!