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
masha68 [24]
2 years ago
5

What is the perimeter of a regular nonagon with a side length of 21

Mathematics
2 answers:
eimsori [14]2 years ago
8 0
The perimeter would be 189

How?-

Formula- 9(the sides of the nonagon) times the length 

so 
9*21=189
vagabundo [1.1K]2 years ago
7 0
21*9

9 sides times 21 per side

You might be interested in
17. According to the Associative Property, which expression is equal to (12)(7)(6x)?
Dvinal [7]

(12)(7)(6x)=504x

(12 * 7 * 6)(x)=504x

(7)(12)(6) + x=504+x

12(7 + 6x)=84+72x

12 + 7 + 6x=19+x

wee see that

A*B=(A)(B)


5 0
3 years ago
Read 2 more answers
The graph below shows the height of a kicked soccer ball f(x), in feet, depending on the distance from the kicker x, in feet: Gr
siniylev [52]
Because the vertex of the parabola is at (16,0), its equation is of the formy = a(x-10)² + 15
The graph goes through (0,0), thereforea(0 - 10)² + 15 = 0100a = -15a = -0.15
The equation is y = f(x) = -0.15(x - 10)² + 15
The graph is shown below.
Part A
Note that y = f(x).
The x-intercepts identify values where the function or  y=0. The x-intercepts occur at x=0 and x=20, or at (0,0) and (20,0).
The maximum value of y occurs at the vertex (10, 15) because the curve is down due to the negative leading coefficient of -0.15.
The curve increases in the interval x = (-∞, 10) and it decreases in the interval x = (10, ∞).
Part B
When x=12, y = -0.15(12 - 10)² + 15 = 14.4When x=15, y = -0.15(15 - 10)² + 15 = 11.25
The average rate of change between x =12 to x = 15 is(11.25 - 14.4)/(15 - 12) = -1.05
This rate of change represents the slope of the secant line from A to B. It approximates the rate at which f(x) decreases in the interval x =[12, 15].
5 0
3 years ago
Read 2 more answers
Which of the following is equal to 4 and 1 over 2 divided by 2 and 2 over 3?
Sphinxa [80]
4 and 1 over 2 times 2 and 3 over 2
4 0
3 years ago
Read 2 more answers
What is 2 2/3 ÷ 5/6 =​
Amiraneli [1.4K]

2 2/3 ÷ 5/6 =​ 3.2 is the answer

4 0
3 years ago
Define Complementary and Supplementary Angles.
Alla [95]

Answer:

Complementary angles: the angles whose sum is 90° are called complementary angles.

Supplementary angles: the angles whose sum is 180° are called supplementary angles.

Step-by-step explanation:

hope it might help....

3 0
2 years ago
Other questions:
  • All the yellow surfaces on this ferris wheel pod
    13·1 answer
  • Write an expression using distributive property that can be used to find the quotient 56 divided by 4
    15·1 answer
  • Solve for me please....... 4x-z=y for x
    5·2 answers
  • Convert 10 meters to feet (round to the nearest tenth)
    13·1 answer
  • 50 POINTS - A Builder intends placing 7 equally spaced homes on a semicircular plot. If the circle has a diameter of 400 feet, w
    15·1 answer
  • PLEASE HELP ME!! Quadrilateral ABCD in the figure below represents a scaled-down model of a walkway around a historic site. Quad
    9·1 answer
  • Christina collects stamps. She has 47 stamps in all. She has 20 stamps from europe. The number of African stamps is 2 times the
    14·1 answer
  • Y = x² – 4 y = 2r + 4​<br><br>Solve algebraicallu for the solutions of equations below.
    9·1 answer
  • -2(x - 3) = -3x + 8<br> What is the answer?
    8·2 answers
  • A solid has twelve more edges than faces. How many vertices does it have?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!