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
TEA [102]
3 years ago
14

A regular polygon has possible angles of rotational symmetry of 20°, 40°, and 80°. How many sides does the polygon have?

Mathematics
1 answer:
liq [111]3 years ago
7 0
The answers 18 sides.
You might be interested in
Need help with 1 & 2 anyone wanna help I will mark you brainliest
xz_007 [3.2K]
1. First step: To get a term of x by itself, add 5 to both sides

Second step: This will become 3x<24

Third step: To separate 3x, divide everything by 3: 3x÷3 < 24÷3

Step four: x < 8

2. First subtract both sides by 12: - 2x + 12 - 12 < - 4 - 12

Second: This becomes - 2x < -16

Third: Divide by -2 to get x by itself - 2x ÷ - 2 > -16 ÷ - 2 Note: If you divide by a negative number, the inequality sign switches. This is a really important step that most students forget.

Fourth: x>8

Note: Try plugging in values when you are done if you are uncertain you have the right answer.
6 0
3 years ago
What is the diameter of a human hair written in scientific notation?
Ymorist [56]

diameter of human hair is around 0.0025cm

 in scientific notation it is: 2.5x10^-3

5 0
3 years ago
The triangle shaped entrance to the cavern i 1 1/2 feet tall and 4 feet wide whats the area
oee [108]
A=1/2 b*h
So substitute it in 1/2*1/2*4
1/2*1/2= 1/4
1/4*4= 4/4= 1 so the entrance is 1 foot tall
6 0
3 years ago
Read 2 more answers
PLEASE HELP!!! WILL AWARD BRAINLIEST!!
Tcecarenko [31]

Answer:

  The value of f(1) is larger than the value of f(3)

Step-by-step explanation:

Put the numbers in the equation and do the arithmetic.

  f(1) = -2(1²) +3(1) +10 = 11

  f(3) = -2(3²) +3(3) +10 = 1

11 is larger than 1, so f(1) is larger than f(3).

5 0
3 years ago
SOMEONE PLEASE HELP ME!!!!! I NEED THIS!
snow_tiger [21]

Answer:

QR ≈ 16.3

Step-by-step explanation:

Since the figures are similar then the ratios of corresponding sides are equal, that is

\frac{MN}{QR} = \frac{MP}{QT} , substitute values

\frac{40.3}{QR} = \frac{57}{23} ( cross- multiply )

57 QR = 926.9 ( divide both sides by 57 )

QR ≈ 16.3 ( to the nearest tenth )

7 0
3 years ago
Other questions:
  • Solve for x: the quantity of x plus 4 all over 2 = 7.
    8·1 answer
  • Simplify by combining like terms 5x+3y+3x
    15·1 answer
  • Mr. Bernard needs to order more boxes for his 16 inch diameter “Super Pizza.” Use 3.14 to approximate π.
    6·1 answer
  • Use natural logarithms to solve the equation. e2x = 1.4 Round to the nearest thousandth.
    6·2 answers
  • Leila and jo are two of the partners in a business. Leila makes $3 in profits for every $4 that jo makes. If their total profit
    5·2 answers
  • Mark said he can decompose <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B5%7D%7B6%7D%20" id="TexFormula1" title=" \frac{5}{6} "
    13·1 answer
  • How many pairs (a, b), where a and b are positive integers, satisfy the equation a2−b2=105? PLS HELP
    14·1 answer
  • Find the x intercept of f(x) = (7x + 7)/(x^2+5)
    10·1 answer
  • 3/8(m−2/9)=4 3/4<br> What does M equal
    13·1 answer
  • PLEASE HELP...
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!