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
Katyanochek1 [597]
3 years ago
12

Fiona drew a regular polygon that first maps directly onto itself after rotating 15 degrees. How many sides does the polygon hav

e?
Mathematics
1 answer:
monitta3 years ago
4 0
The answer is the polygon have 24 sides.

Solution is shown step by step: Let c be the 15 degrees.

1. C = 360 divided by n

2. 15 = 360 divided by n

3. then transpose n to the other side
    15n = 360

4. divide both sides by 15
    n = 360 divided by 15

5. n = 24
You might be interested in
can someone explain scientific notation to me? i dont know if this would be a right question but i need it to be explained
Nikitich [7]

Answer:

In step by step explanation

Step-by-step explanation:

Move your decimal until you have one non-zero number left of your deciaml point the number of times you moved you decimal to the left will be the exponent you put attached to a ten.

8 0
3 years ago
Multiply -10(-7x² + 5x)​
tatiyna

Answer: 70x^2 -50x

Step-by-step explanation:

^ means exponent

7 0
3 years ago
Read 2 more answers
Recall the chapter example which described the fact that the mean IQ in large, diverse populations is 100 and the standard devia
vova2212 [387]

Answer:

The margin of error for the 99% confidence level for this sample is ±2.23.

None of the given figures is close to the answer:

E. None of the above

Step-by-step explanation:

margin of error (ME) around the mean can be calculated using the formula

ME=\frac{z*s}{\sqrt{N} } where

  • z is the corresponding statistic of the 99% confidence level (2.576)
  • s is the population IQ standard deviation (15)
  • N is the sample size (300)

Using these numbers we get:

ME=\frac{2.576*15}{\sqrt{300} }  ≈ 2.23

7 0
3 years ago
Please help I am not soo good at math
hram777 [196]

Answer:

D

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Let sin(−θ)=−3/5 and tanθ>0. What is the value of cos(−θ)?
Jobisdone [24]

Answer:

The value of  Cos (-Ф) \dfrac{\textrm 4}{\textrm 5} .

Step-by-step explanation:

Given Trigonometric function as :

sin( - Ф ) = \frac{- 3}{5}

- sin Ф = \frac{- 3}{5}

So, sin Ф = \frac{ 3}{5}

Now, as sin Ф = \dfrac{\textrm perpendicular}{\textrm hypotenuse}

So ,  \dfrac{\textrm perpendicular}{\textrm hypotenuse} =  \frac{ 3}{5}

So, perpendicular = 3

And hypotenuse = 5

Now,<u> From Pythagoras Theorem</u>

Base ² = Hypotenuse² - Perpendicular²

Or, Base ² = 5² - 3²

Or, Base ² = 25 - 9

Or, Base ² = 16

∴  Base = \sqrt{16}

I.e Base = 4

Now, Cos Ф =  \dfrac{\textrm base}{\textrm hypotenuse}

So, Cos Ф =  \dfrac{\textrm 4}{\textrm 5}

Now , Since

Cos ( - Ф ) = Cos Ф

So,  Cos ( - Ф ) = Cos Ф =  \dfrac{\textrm 4}{\textrm 5}

Hence The value of  Cos (-Ф) \dfrac{\textrm 4}{\textrm 5} . Answer

6 0
3 years ago
Other questions:
  • Two-fifths of one less than a number is less than three-fifths of one more than that number. What numbers are in the solution se
    13·2 answers
  • A movie is 2 hours and 28 minutes long. It started at 7:50pm . At what time will the movie ends
    14·2 answers
  • WILL CROWN BRAINLIEST, GIVE THANKS, AND AMAZING RATING
    11·1 answer
  • (2x+1)(2x-1) find the product
    6·1 answer
  • La catul numerelor 27 si 3 adauga o patrime din 32
    5·1 answer
  • What equation fits the table
    5·2 answers
  • :
    7·1 answer
  • NEED THE ANSWER ASAP THANKS!!!!!!
    11·2 answers
  • A(n) ______ probability is based on repeated trials of an experiment
    10·1 answer
  • The three consecutive whole numbers that come before 651 0001 are
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!