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
Vera_Pavlovna [14]
2 years ago
7

If the figure is a regular polygon find the value of x

Mathematics
1 answer:
Darya [45]2 years ago
8 0

Answer:

x = 21

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180° (n - 2) ← n is the number of sides

Here n = 12 , then

sum = 180° × 10 = 1800°

Each of the 12 interior angles = 1800° ÷ 12 = 150

Then

7x + 3 = 150 ( subtract 3 from both sides )

7x = 147 ( divide both sides by 7 )

x = 21

You might be interested in
What is the measure of
wel
The picture is blurry
3 0
2 years ago
Read 2 more answers
A 2-ft vertical post casts a 16-in. shadow at the same time a nearby cell phone tower casts a 120-ft shadow. How tall is the cel
Snowcat [4.5K]
Do 120÷8 aka 15  that is the answer 
3 0
3 years ago
Solve by elimination
DiKsa [7]

2x-y=-8
+
y=2
2x=-6
x=-3
2*-3-y=-8
-6-y=-8
-y=-2

x=-3 and y=2
7 0
3 years ago
2/3 of a pizza was left over. A group of friends divided the leftover pizza into pieces each equal to 1/18 of the original pizza
sasho [114]
There was 10 friends because there if you times 2/3 by 6 you get 12/18 and 10 people eat it then there is 3/18 left and after you simpfly it you get 1/6
4 0
2 years ago
Coefficient of x^2 in the expansion of (x-3)^3
Mila [183]

Answer:

-9

Step-by-step explanation:

(x-3)(x-3)(x-3)

(x^2-6x+9)(x-3)

x^3-9x^2+27x-27

Therefore, the coefficient of x^2 is -9.

7 0
2 years ago
Read 2 more answers
Other questions:
  • Simplify (8x^2 - 1 + 2x^3) - (7x^3 - 3x^2 + 1).
    14·1 answer
  • A computer programmer had two files with a total size of 68.76 gigabytes. If one of the files was 35.46 gigabytes, how big is th
    15·2 answers
  • Simplify 12 to the 16th power over 12 to the 4th power
    11·1 answer
  • Solve by factoring:<br>4x² - 8x=0​
    5·1 answer
  • A 2-column table with 5 rows. The first column is labeled x with entries negative 4, negative 1, 0, 2, 3. The second column is l
    9·1 answer
  • State that dgree of the term -6x²y​
    15·1 answer
  • Find the value of 4y - 8 given that -3y + 3 = 6
    8·1 answer
  • You come across a box of perfume what should you do Amazon
    13·1 answer
  • Can someone help me privately
    13·1 answer
  • Can somebody help me please
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!